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Zantac (Ranitidine)

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Generic Zantac is a high-quality medication which is taken in treatment of intestines, ulcers in the stomach, Zollinger-Ellison syndrome, gastroesophageal reflux disease (GERD) and other conditions of heartburn. Generic Zantac acts by decreasing the amount of acid produced in the stomach. It is a heartburn medicine.

Other names for this medication:

Similar Products:
Axid, Pepcid, Tagamet , Pepcid, Fluxid, Pepcid AC


Also known as:  Ranitidine.


Generic Zantac is a perfect remedy in struggle against intestines, ulcers in the stomach, Zollinger-Ellison syndrome, gastroesophageal reflux disease (GERD) and other conditions of heartburn.

Generic Zantac acts by decreasing the amount of acid produced in the stomach. It is a heartburn medicine.

Zantac is also known as Ranitidine, Monorin, Histac, Ranitil.

Generic name of Generic Zantac is Ranitidine.

Brand names of Generic Zantac are Zantac, Zantac 150, Zantac 300, Zantac 300 GELdose, Zantac 75, Zantac EFFERdose, and Zantac GELdose.


Generic Zantac is available in tablets (150 mg, 300 mg), capsules, syrup.

Before swallowing, fizzy tablets of 25 ml should be dissolved in 1 teaspoon of water.

Before drinking Generic Zantac granules should be mixed with 6 to 8 ounces of water.

The treatment can take more than 8 weeks.

Keep Generic Zantac away from children and do not share it with other people.

Take Generic Zantac tablets orally with water.

Do not crush or chew it.

If you want to achieve most effective results do not stop taking Generic Zantac suddenly.


If you overdose Generic Zantac and you don't feel good you should visit your doctor or health care provider immediately. Symptoms of Generic Zantac overdosage: coordination, feeling light-headed, fainting.


Store at room temperature between 2 and 30 degrees C (36 and 86 degrees F) away from moisture, light and heat. Keep container tightly closed. Throw away any unused medicine after the expiration date. Keep out of the reach of children.

Side effects

The most common side effects associated with Zantac are:

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Side effect occurrence does not only depend on medication you are taking, but also on your overall health and other factors.


Do not take Generic Zantac if you are allergic to Generic Zantac components.

Be careful with Generic Zantac if you're pregnant or you plan to have a baby, or you are a nursing mother.

Generic Zantac can increase a risk of developing pneumonia.

Be careful using Generic Zantac if you are taking triazolam (Halcion).

It can be dangerous to use Generic Zantac if you suffer from or have a history of kidney disease, liver disease, phenylketonuria (PKU), porphyria.

Avoid alcohol.

Do not stop taking Generic Zantac suddenly.

zantac tablets

The pharmacokinetics of oral ranitidine were studied in 24 Mexican male healthy volunteers. Subjects received a tablet containing 150 mg of ranitidine (Azantac, Glaxo de México, Mexico City) after an overnight fast and blood samples were drawn at several times for a period of 24 h. Ranitidine concentration in plasma was measured by high performance liquid chromatography and pharmacokinetic parameters were determined by non-compartmental analysis. Ranitidine plasma concentration increased with time, reaching a maximum of (mean +/- SEM) 484 +/- 34 ng/ml in 2.7 +/- 0.2 h. Plasma levels then decayed with a terminal half-life of 4.8 +/- 0.3 h. The area under the plasma concentration against time curve was 2440 +/- 126 ngh/ml. Oral ranitidine pharmacokinetic parameters in Mexicans appeared to be similar to those previously reported for Caucasians.

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Esophagitis is common in children with cerebral palsy. Because histamine2-receptor antagonists such as ranitidine have not been uniformly effective, we treated disabled children with esophagitis with greater than usual doses. Endoscopy and pH monitoring were used to monitor dose and response to treatment. A dose of 9.3 +/- 0.9 mg/kg/day did not improve visual or microscopic esophagitis after 3 months. A dose of 14.8 +/- 3.9 mg/kg/day resulted in only slight microscopic improvement, but symptoms were improved. There was no correlation between esophageal reflux index at enrollment and either severity of esophagitis or response to treatment. Elevation of gastric pH by ranitidine was infrequent. These results affirm that pH monitoring does not reliably identify disabled children with reflux esophagitis nor does ranitidine reliably heal this disorder.

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The surgical wards of a university-affiliated, 700-bed, tertiary hospital.

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To assess the knowledge of staff and the effect of formal training on house officers we conducted telephone questionnaires of 40 house officers and 18 nurses. The following points were assessed: knowledge of dilution of drugs; knowledge of the rate at which drugs should be given; and the rate at which drugs were given. Appropriately trained nurses had greater knowledge than 'untrained' house officers. In all, 17/18 (94%) nurses compared with 9/18 (50%) house officers knew the correct rate at which to give ampicillin (P = 0.0036, Fisher's exact test); 14/18 (78%) nurses and 1/18 (6%) house officers said they gave ampicillin at the correct rate (P < 0.001); 13/18 (72%) nurses and 7/18 (39%) house officers said they gave ranitidine at the correct rate (P = 0.037). Only 1 of the 10 house officers who knew how rapidly to administer ampicillin said they took the correct length of time; 6 of the 10 who knew how rapidly to give ranitidine said they gave it at the correct rate. Training improves the knowledge of house officers, but other factors besides lack of knowledge (possibly lack of time) adversely affect delivery of intravenous drugs.

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To analyze the degree of utilization of generic drugs in Spain and Catalonia. To determine real savings and scope for further savings due to the use of generic drugs.

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An assessment was made of the change and the effect of a histamine H(2)-receptor blocker (H(2)-blocker) or omeprazole on gastric pH after surgery.

zantac suspension

As 95% of all prescriptions are for orally administered drugs, the issue of oral absorption is central to the development of pharmaceuticals. Oral absorption is limited by a high molecular weight (>500 Da), a high log P value (>2.0) and low gastrointestinal permeability. We have designed a triple action nanomedicine from a chitosan amphiphile: quaternary ammonium palmitoyl glycol chitosan (GCPQ), which significantly enhances the oral absorption of hydrophobic drugs (e.g., griseofulvin and cyclosporin A) and, to a lesser extent, the absorption of hydrophilic drugs (e.g., ranitidine). The griseofulvin and cyclosporin A C(max) was increased 6- and 5-fold respectively with this new nanomedicine. Hydrophobic drug absorption is facilitated by the nanomedicine: (a) increasing the dissolution rate of hydrophobic molecules, (b) adhering to and penetrating the mucus layer and thus enabling intimate contact between the drug and the gastrointestinal epithelium absorptive cells, and (c) enhancing the transcellular transport of hydrophobic compounds. Although the C(max) of ranitidine was enhanced by 80% with the nanomedicine, there was no appreciable opening of tight junctions by the polymer particles.

zantac reviews

According to previous observations, basal gastric acid secretion is downregulated by phosphoinositol-3-(PI3)-kinase, phosphoinositide-dependent kinase (PDK1), and protein kinase B (PKBβ/Akt2) signaling. PKB/Akt phosphorylates glycogen synthase kinase GSK3. The present study explored whether PKB/Akt-dependent GSK3-phosphorylation modifies gastric acid secretion.

zantac dosing information

210 children with CD were identified; 27 of those children had ECD. Nine children presented with specific upper GI symptoms; dysphagia, heartburn, nausea, vomiting, and odynophagia. Esophagoscopy in children with upper gastrointestinal symptoms revealed deep ulcers (n = 2), aphthous ulcers (n = l), erosions (n = l), edematous nodules, (n = l) and normal mucosa (n = 4). In asymptomatic children aphthous ulcers (n = 5), erosions (n = 3), deep ulcers (n = 3), and normal looking mucosa (n = 7) were seen. Twenty children also had gastric lesions, 3 children had duodenal lesions, and 3 children had both duodenal and gastric involvement. All 27 children had evidence of ileo-colonic or colonic disease. Acid suppressive medications were given only to children with upper GI symptoms and endoscopic esophageal lesions. The mean duration of follow-up from diagnosis of CD was 3.02 years (range 2 months-11.7 years). At last follow-up review, 7 children were receiving acid suppression and no children were receiving steroids. There were no complications related to ECD.

zantac dosage

Rabeprazole was superior to ranitidine in esophageal healing and symptom relief in patients with erosive gastroesophageal reflux disease, and was equally well tolerated.

zantac dosage directions

Seventy percent methanolic extract of the plant was prepared and fed to 36-h fasted rats. Ulcer was induced in these rats by single oral administration of aspirin (400 mg/kg) 1 h after the administration of the plant extract. After 4 h, the rats were sacrificed, ulcer index was calculated, and antioxidant activity of the extract in gastric mucosa was evaluated by determining the levels of superoxide dismutase, glutathione, glutathione peroxidase, and tissue lipid peroxidation.

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Ranitidine treatment improves vaccination-induced T-cell dependent antibody responses in patients with CLL but has no beneficial effect on the response to vaccination with unconjugated polysaccharide antigens.

zantac infant dose

1. The application of high-voltage paper electrophoresis (h.v.p.e.) to the identification of drug metabolites in urine and bile has been investigated. 2. The major urinary metabolite of [3H]salbutamol in man had an electrophoretic mobility indicative of a sulphate ester. 3. A metabolite of [14C]ranitidine present in rat bile was shown to contain an ionized group with a pKa corresponding to a carboxylic acid. 4. The electrophoretic mobility-pH profile of a metabolite of radiolabelled N"-cyano-N-[2-[5-(dimethylaminomethyl)-2-furanylmethylthio]ethyl]-N-methylguanidine (14C-AH 18801) excreted in dog urine suggested that oxidation of the tertiary amine group of the compound had occurred. 5. H.v.p.e. provided valuable information on the structure of both phases I and phase II metabolites at a stage when the material was insufficiently pure for identification by other techniques.

zantac 60 mg

Experiments were conducted to study the transport of the histamine H2-receptor antagonist, cimetidine, in luminal membrane vesicles prepared from rabbit renal cortex. Cimetidine accumulated in the vesicles with time. Cimetidine uptake was sensitive to changes in vesicle size, suggesting that the compound is transported into an osmotically reactive intravesicular space. Its rate of uptake could be described by both a saturable and a nonsaturable process. The Km was 4.6 +/- 4.0 microM and the Vmax was 6.8 +/- 2.3 pmol X s-1 X mg protein-1 (mean +/- SD, n = 4). N1-methylnicotinamide (NMN), cimetidine, cimetidine sulfoxide, and ranitidine inhibited the uptake of cimetidine. Cimetidine uptake in the presence of an outwardly directed proton gradient was enhanced in vesicles preloaded with a higher concentration of unlabeled cimetidine (2.4 X 10(-4) M). An outwardly directed proton gradient enhanced the uptake of cimetidine to values exceeding its equilibrium accumulation. Uptake stimulated in this way could be inhibited by the cation, NMN, the bases, ranitidine, and cimetidine sulfoxide, and interestingly, by the anion, probenecid. The effect of probenecid did not appear to be due to nonspecific effects on membrane binding, membrane potential, or vesicle size. These data are consistent with data obtained in isolated perfused proximal tubules, demonstrating that probenecid inhibits cimetidine transport. The data in this study suggest that the effect of probenecid on cimetidine transport specifically involves the transporter in the luminal membrane.

zantac pediatric dose

This was a retrospective historical cohort study assessing the rates of hypersensitivity reactions in patients receiving paclitaxel for ovarian or primary peritoneal carcinoma at the Hamilton Regional Cancer Centre from 1996 to 2000. Until 1998, all patients received the conventional prophylactic regimen consisting of two doses of oral dexamethasone (20 mg), 12 and 6 h prior to paclitaxel. From 1998 to the present, patients received a single dose of intravenous dexamethasone (20 mg), 30 min prior to paclitaxel. All patients also received an H(1) and H(2) blocker intravenously prior to paclitaxel administration. The analysis was corrected for potential covariates such as dose of paclitaxel and rate of infusion. The primary outcome measure was the rate of hypersensitivity reactions as defined by the National Cancer Institute of Canada-Clinical Trials Group. The Yates-corrected chi(2) test was used to compare the rates of these reactions, and a logistic regression analysis was used to determine whether any of the covariates were significant factors in these reactions.

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The informal (and/or illegal) e-commerce of pharmaceutical formulations causes problems that governmental health agencies find hard to control, one of which concerns formulas sold as natural products. The purpose of this work was to explore the advantages and limitations of DOSY and HPLC-UV-SPE-NMR. These techniques were used to identify the components of a formula illegally marketed in Brazil as an herbal medicine possessing anti-inflammatory and analgesic properties. DOSY was able to detect the major components present at higher concentrations. Complete characterization was achieved using HPLC-UV-SPE-NMR, and 1D and 2D NMR analyses enabled the identification of known synthetic drugs. These were ranitidine and a mixture of orphenadrine citrate, piroxicam, and dexamethasone, which are co-formulated in a remedy called Rheumazim that is used to relieve severe pain, but it is prohibited in Brazil because of a lack of sufficient pharmacokinetic and pharmacodynamic information.

zantac generic

The median observation period of the 740 patients included was 6.8 (range 5.4-7.9) years. A univariate analysis of all 740 patients and of the subgroup of 560 who underwent curative resection showed no significant effect of ranitidine on survival. Furthermore, ranitidine had no survival benefit in curatively resected patients who received a perioperative blood transfusion (n = 358), but it improved the survival of non-transfused patients (n = 202; hazard ratio (HR) 0.6 (95 per cent confidence interval (c.i.) 0.4 to 0.9), P = 0.02) and of non-transfused patients who did not develop postoperative infectious complications (n = 170; HR 0.6 (95 per cent c.i. 0.4 to 0.9), P = 0.01). In multivariate analysis of patients who had a curative resection, including Dukes' stage, age, gender, tumour location, blood transfusion, postoperative infectious complications and treatment, ranitidine still had an independent, beneficial effect on survival (HR 0.6 (95 per cent c.i. 0.4 to 1.0), P = 0.04) within the subgroup of patients who did not receive perioperative blood transfusion and did not develop postoperative infectious complications.

zantac 75 generic

Twelve male Sprague-Dawley rats were divided into DCQD group and DCQD plus ranitidine group, and were orally administered with DCQD at a dose of 10 g/kg or DCQD (10 g/kg) combined with ranitidine (150 mg/kg), respectively. Blood samples were gathered after a series of time intervals. Metabolism of rhein was determined with a reversed-phase high-performance liquid chromatography with internal standard of 1, 8-dihydroxyanthraquinone and the data were analyzed with DAS 2.1 program. The pharmacokinetic parameters were compared between the two groups.

zantac 600 mg

While dyspeptic patients in primary care often receive empirical treatment with antisecretory drugs, a substantial number suffer from motility disturbances which may be associated with their complaints. We aimed to compare the effectiveness of treatment with antisecretory treatment with a prokinetic agent in uninvestigated dyspepsia.

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The pharmacokinetic parameters of rhein in the DCQD group, including peak concentration (C(max)), area under the plasma concentration-time curve (AUC), distribution phase half-life (t(1/2alpha)), elimination rate constant (K(10)) and central to peripheral transfer rate constant (K(12)), were significantly different to those in the DCQD plus ranitidine group (P<0.05, P<0.01). There were no significant differences in the other parameters between the two groups.

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Inflammatory reactions play an important role in peritoneal sclerosis in patients on peritoneal dialysis. Since histamine affects inflammatory reactions and immune responses, we investigated effects of intraperitoneal administration of histamine on peritonitis induced by mechanical scraping in mice.

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The effects of the anti-acid secretory agents, cimetidine (N-cyano-N'-methyl-N"-(2-([(5-methyl-1H-imidazol-4-yl)methyl]thio)ethyl) guanidine), ranitidine (N-(2-(((-5-[(dimethylamino)methyl]-2-furanyl)methyl)thio)ethyl)-N'-meth yl- 2-nitro-1,1-ethene-diamine), roxatidine (2-acetoxy-N-(3-[m-(1-piperidinylmethyl)phenoxy]-propyl) acetamide hydrochloride), FRG-8813 (2-(furfurylsulfinyl)-N-(4-[4-(piperidinomethyl)-2-pyridyl]o xy-(z)-2- butenyl)acetamide), omeprazole (5-methoxy-2-([(4-methoxy-3,5-dimethylpyridinyl)methyl]sulfinyl)- 1H-benzimidazole), and NC-1300-O-3 (2-([2-(isobutylmethylamino)benzyl]sulfinyl)-1H- benzimidazole), on mucin biosynthesis were studied in rat gastric mucosa by using an organ culture technique. [3H]Glucosamine incorporation was stimulated in the corpus region by the histamine H2 receptor antagonists which have a six-membered aromatic ring, roxatidine and FRG-8813, and the new H+,K(+)-ATPase inhibitor, NC-1300-O-3. Thus, these drugs not only inhibit acid secretion but may also promote gastric mucosal protective actions. The present observations also demonstrate that the determination of mucin biosynthesis may be a useful tool for evaluation of mucosal protective activity.

zantac 20 mg

Pathologic gastro-oesophageal reflux was seen in 3 of the 13 responders and 4 of the 18 no-responders (NS). The responders had frequent short reflux episodes (< 1 min in duration). When 4 patients with > or = 5 reflux episodes longer than 5 min were excluded, the number of short reflux episodes (median) in responders and non-responders was 32 and 14, respectively. The difference is statistically significant (p = 0.025). There were no other differences between the groups.

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The capsule released the ranitidine solution when activated in the jejunum, ileum and colon (visualized by the gamma camera). There was no difference in the extent of ranitidine absorption or ranitidine pharmacokinetics when the capsule was activated in the jejunum or ileum.

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The antiulcer effect of melatonin on gastric lesions caused by restraint-cold stress was studied with the intent of determining the mechanism of action of this agent. Melatonin dose-dependently prevented restraint-cold stress-induced gastric damage with around 90% inhibition at a dose of 60 mg/kg BW. When compared with already marketed antiulcer drugs such as ranitidine and omeprazole, melatonin was found to be more effective than ranitidine but less effective than omeprazole in preventing stress ulcer. As stress-induced gastric lesions are mainly caused by oxidative damage because of hydroxyl radicals (*OH), the effect of melatonin in scavenging the.OH generated during stress conditions in vivo as well as in an in vitro model system were studied. The results indicate that melatonin caused an 88% reduction of endogenous *OH during stress in vivo, an observation confirmed in an established in vitro system. Furthermore, a decrease in the activity of gastric peroxidase (GPO) and an increase in the gastric mitochondrial superoxide dismutase (Mn-SOD) activity because of restraint-cold stress was attenuated by melatonin pretreatment indicating that the indole possibly exerts its gastroprotective effects through its direct as well as indirect antioxidant activities. Moreover, in separate experiments, cotreatment of rats with melatonin and ranitidine or omeprazole was found to protect against stress ulceration in doses at which either of these alone could not protect the stomach. The findings raise the possibility of melatonin being considered as an effective gastroprotective agent individually or as a cotreatment with either ranitidine and omeprazole.

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Gastroesophageal reflux disease (GERD) is a chronic symptomatic condition and may be associated with erosive esophagitis (EE). Considerable data on the long-term maintenance of healing of EE are available, but data on long-term GERD symptom prevention and patient quality of life (QOL) are limited.

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zantac drug class 2016-10-31

Gastric ulcers are a frequent problem in the United States. Proton pump inhibitors have been shown to increase healing rates and improve clinical symptoms. The objective of this study is to compare gastric ulcer healing rates for patients treated with a proton pump inhibitor (PPI) (omeprazole, rabeprazole, pantoprazole, or lansoprazole), an histamine 2- receptor antagonist (ranitidine) or buy zantac placebo.

zantac suspension 2016-07-17

Ranitidine and metoclopramide were compared for their ability to reduce esophageal acid contact time and heartburn. Twelve patients with histories of heartburn received ranitidine 150 mg bid, metoclopramide 10 mg qid, and placebo (ranitidine-matched) bid in a randomized, open-label, crossover fashion. Esophageal pH was monitored with an antimony electrode and portable recording unit for 24 h under strictly controlled laboratory conditions. Ranitidine significantly (p less than or equal to 0.05) reduced 24-h acid contact time from 11.6% to 6.4%. Reflux episode frequency was also significantly (p less than or equal to 0.05) reduced from 82 to 45 episodes per day and from 12 to 2 episodes at night. In contrast, metoclopramide did not reduce 24-h acid contact time buy zantac or daytime reflux episode frequency, although nighttime episode frequency was significantly (p less than or equal to 0.05) decreased. Only ranitidine significantly reduced heartburn frequency and severity. We conclude that acute treatment with ranitidine, but not metoclopramide, significantly reduces esophageal acid contact time, reflux episode frequency, and heartburn frequency and severity in patients with gastroesophageal reflux.

zantac generic ranitidine 2015-11-08

This general discontinuous oral absorption pharmacokinetic model may buy zantac be taken as a possible tool to characterize each site of absorption and to estimate the area under curves or bioavailability.

zantac pills 2015-12-22

In patients with NUD and H. pylori infection, triple therapy eradicated H. pylori in 88% and was superior to sucralphate in producing symptom relief (81 vs 33%, P = 0.0003) and histological improvement in gastritis ( buy zantac 73 vs 30%, P = 0.003). In the H. pylori-negative group, sucralphate was superior to ranitidine with regard to symptom relief (68 vs 36%, P = 0.04) and improvement in gastritis (44 vs 12%, P = 0.09). The symptomatic improvement persisted until 12 weeks after the start of treatment in triple therapy group only.

zantac reviews 2016-07-06

The cardiovascular effects of ranitidine were studied in 12 children with congenital heart disease who had been given tolazoline as a pulmonary vasodilator. Ranitidine was given as prophylaxis against gastrointestinal haemorrhage induced buy zantac by tolazoline. Tolazoline 1-2 mg/kg caused significant falls in pulmonary and systemic vascular resistances and a rise in heart rate. After intravenous administration of ranitidine 3 mg/kg both resistances rose again and neither resistance then differed significantly from baseline levels. Heart rate also fell and the final heart rate was significantly below baseline levels. We conclude that there may be H2 receptors within the pulmonary and systemic circulations and that tolazoline may mediate some of its effects through these H2 receptors rather than by alpha adrenergic receptor blockade. The safety of H2 blockade in children, particularly those with pulmonary hypertension, needs further investigation.

zantac medication 2017-12-26

Although this study has relatively low power, we conclude that the use of symptom subgroups seems to be a sensible approach when choosing empirical therapy in dyspepsia. Patients with reflux buy zantac -like symptoms seem to have the best prognosis in the first year in every strategy.

zantac dosage pediatric 2017-10-16

An alternative model for the measurement of ureteral peristalsis is described using the goat ureter. Ureters from freshly slaughtered goats (Capra aegagous hircus) were collected from a local slaughter house. The peristaltic reflex of these preparations was recorded using a specially designed apparatus. The preparations were mounted so that contractile responses to drugs could be recorded isometrically. Histological studies were undertaken to enable a correlation to be made between the anatomical observations and the functional studies. The spontaneous peristaltic reflex of the goat ureter (7 +/- 2 per 2 min) showed a 50% increase in the frequency of contraction (13.66 +/- 1.6, P<0.001) after application of histamine at a concentration of between 6.512 microM and 13.024 microM, but was blocked completely by 10.4 microM of pheniramine (P>0.05). The reflex was not blocked by the H2 blocker ranitidine (P<0.001). The effects of acetylcholine were variable. Calcium chloride at 6.8 microM resulted in a tetanic response (P<0.001). Nicorandil showed partial inhibition of spontaneous peristaltic reflex at 189.4 microM and complete inhibition at 473.4 microM (P<0.001). Although acetylcholine did not show any buy zantac appreciable effect on the isometric contractions at a maximum dose of 275.2 microM, adrenaline increased the frequency of contractions by 8.2 +/- 6.5 (P<0.001), while salbutamol and isoprenaline had no effect. The histology revealed a striking resemblance to the human ureter, with a structure that explained the responses obtained. The anatomic, physiologic and histological similarities to the human ureter make it an effective alternative in tropical countries for research on ureteral peristalsis.

pediatric zantac dosing 2017-06-08

Docetaxel has no significant activity in patients with recurrent buy zantac malignant glioma.

zantac mg 2015-11-16

During a 24-h fast, the pH 3 and pH 4 holding times and the mean pH were significantly higher in patients administered omeprazole (PPI; 93.2 +/- 9.2%, 90.6 +/- 11.1%, and 6.9 +/- 0.6, respectively) than in those administered ranitidine (H2-RA; 61.0 +/- 27.5%, 55.8 +/- 29.1%, and 4.8 +/- 1.3, respectively; P<0.001 for all). Results were similar during feeding (PPI meal, 98.9 +/- 2.6%, 98.3 +/- 3.7%, and 6.9 +/- 0.3; H2-RA meal, 59.8 +/- 17.6%, 49.7 +/- 18.0%, and 4.3 +/- 0.7, respectively; P<0.001 for all). In addition, the pH 3 and pH 4 holding times and the mean pH in the H2-RA meal buy zantac group were not significantly lower than those in the H2-RA group (P=0.999, P=0.865, and P=0.687, respectively). The values in the PPI and PPI meal groups were similar (P=0.872, P=0.777, and P>0.999, respectively).

zantac dosage pediatrics 2016-12-29

Dapsone (DDS) (4,4'diaminodiphenylsulfone), the drug of choice for the treatment of leprosy, frequently induces haemolytic anaemia and methaemoglobinaemia. N-hydroxylation, one of the major pathways of biotransformation, has been constantly related to the methaemoglobinaemia observed with the use of the drug. In order to determine the reversible inhibition of this toxicologic bioactivation pathway without changing the detoxification pathways of the drug or cytosolic acetylation, cimetidine (CIM), ranitidine and famotidine were administered in combination with DDS to male Wistar rats weighing 200-220 g. The animals were divided into nine groups of eight: group 1 received a single dose of 40 mg kg (-1) DDS in dimethylsulfoxide (DMSO) and groups 2-4 received the same treatment as group 1 but after the administration of a single dose of 100, 150 and 200 mg kg (-1) CIM, respectively, injected 2 h prior DDS administration. Groups 5-9 received the same treatment as group 2 but after the treatment of ranitidine (50 and 100 buy zantac mg kg (-1) intraperitoneally (i.p.) in 200 microl DMSO) and famotidine (10, 50 and 100 mg kg (-1) i.p. in 200 microl DMSO), respectively. The animals were then anaesthetized with ether and blood was collected from the aorta for the determination of plasma DDS and monoacetyldapsone concentrations by HPLC and later for the determination of methaemoglobinaemia by spectrophotometry. CIM showed a higher affinity for cytochrome P-450 than famotidine and ranitidine. The results obtained showed the potentiality of the pharmacological effects of DDS with a low risk of adverse reactions, especially methaemoglobinaemia, which is dose dependent.

zantac 48 tablets 2015-08-29

The efficacy of boehmite (Rocgel) and of ranitidine was compared in a randomized, double-blind 4-week trial in patients with symptomatic, endoscopically free macroscopic reflux oesophagitis. Of the 64 patients who completed the study 33 received boehmite and 31 ranitidine. Significant symptomatic improvement occurred in both treatment groups (global clinical score and self evaluation by patients) (p < 0.001). Disappearance of heartburn was 52 per cent (15/29) with boehmite and 53 per cent (16/30) with ranitidine. Disappearance of regurgitation was 48 per cent (10/21) with both treatments. 33% of the patients became totally symptom-free. Our results indicate that boehmite seems to be at least as effective as ranitidine in relieving symptoms. Cost of treatment with boehmite, on the other hand is cheaper than ranitidine. As a safe, buy zantac locally active mucosal protecting agent and antacid, boehmite is an effective drug for the treatment of reflux oesophagitis without macroscopic lesions.

generic zantac cost 2015-05-10

The objectives of this work were to evaluate the importance of moderate passive permeability on apparent P-glycoprotein (P-gp) kinetics, and demonstrate that inspection of basolateral to apical and apical to basolateral (BL-AP/AP-BL) permeability buy zantac ratios may result in a compound being overlooked as a P-gp substrate and inhibitor of another drug's transport via P-gp inhibition.

zantac generic equivalent 2015-08-08

Sixty patients with bleeding duodenal ulcers were randomized to treatment with sucralfate or ranitidine. Endoscopy was performed in all patients within 24 hours from admission. Acute phase outcome was similar in both groups. Four patients in the sucralfate group and 1 patient in the ranitidine group rebled and required surgical treatment (NS). Healing rate at 6 weeks was 88% with sucralfate and 96.6% with ranitidine. Relapsing rate without maintenance therapy at 6 and 12 months was 21.1% and 42.1% for sucralfate-treated patients and 33.3% and 56.5% for ranitidine-treated patients (NS). Sucralfate-treated patients had a significantly lesser relapsing rate at 12 months buy zantac compared to ranitidine treated patients, in the smokers group.

zantac 400 mg 2016-10-27

Twelve healthy non-smokers (7M and 5F) completed a balanced three-way crossover investigation designed to characterise the influence of oral cimetidine (800 mg), ranitidine (300 mg) and placebo pretreatment for 7 days on the pharmacokinetics of a 250 mg single oral dose of theophylline. The oral clearance of theophylline after ranitidine pretreatment, 4.55 +/- 1.69 l/h (mean +/- SD) was indistinguishable from that after placebo, 4.78 +/- 1.96 l/h, but cimetidine was associated with a significant 21% reduction in theophylline clearance, 3.58 +/- 1.07 l/h (P = 0.006). There was a correspondingly significant increase in the terminal half-life of theophylline following cimetidine, 6.11 +/- 1.29 h (P = 0.017), compared with 5.05 +/- 1.43 h and 4.88 +/- 1.45 h for placebo and ranitidine, respectively. There was no change in maximum theophylline concentration or time to maximum but following cimetidine the plasma theophylline levels between 4 and 12 hours were 15-50% higher than following placebo (P less than 0.002). These data indicate a significant interaction between 800 mg cimetidine given once daily and theophylline which is likely to be the result of enzyme inhibition. Once-daily dosing with 300 mg ranitidine had no significant effect on theophylline pharmacokinetics. buy zantac

zantac 75 reviews 2016-11-25

The effects of identical morning (08.05 hours) and evening (20.05 hours) meals on intragastric pH were compared in 12 healthy volunteers receiving gastric antisecretory medication. Dosing included continuous intravenous infusion ranitidine (50 mg bolus followed by 12.5 mg/h) or a matching placebo which were randomly administered prior to and following 7 days of treatment with oral omeprazole (40 mg mane). Intragastric pH was monitored continuously using a tethered indwelling pH probe. Subjects were divided into groups, one of which began the pH monitoring session in the morning, the other in the evening. The median 24-h intragastric pH was significantly increased by all active dosing regimens (P Flagyl 100 Mg less than 0.05). Combined omeprazole and ranitidine produced the highest median pH, 5.92. However, a breakthrough drop in intragastric pH occurred during the evening after all active dosing. Intragastric pH fell prior to and after consumption of the evening meal with median pH values less than 4 during all sessions. The evening meal led to significantly lower intragastric pH compared to the morning meal for omeprazole and the combined omeprazole and ranitidine dosing periods (P less than 0.05). There was no difference between morning and evening pH during the placebo or ranitidine periods. Ranitidine and omeprazole, either alone or in combination, were unable to prevent the meal-stimulated decline in intragastric pH during the evening time period.

zantac and alcohol 2017-06-28

The omeprazole/clarithromycin/bismuth/tetracycline-based quadruple therapy provides higher H. pylori eradication rates than the ranitidine/metronidazole/bismuth/tetracycline-based quadruple therapy when administered per Artane Overdose Symptoms protocol. The prolongation of the latter regimen from 2 to 3 weeks did not increase eradication rates.

zantac kids dosage 2015-10-03

The effect of a series of structurally-diverse histamine type II (H2)-receptor antagonists on histamine-mediated immunosuppression of human peripheral blood lymphocytes (HPBL) has been examined. This analysis of structure--activity relationships was undertaken to examine the validity of the recent proposal arising from clinical studies that H2-receptor antagonists containing a furan ring were devoid of the effects on lymphocyte function reported previously in studies using cimetidine and other H2-receptor antagonists containing an imidazole nucleus. Cimetidine and two furan-containing antagonists, ranitidine and SKF 93479, were found to be devoid of any effect on PHA-induced proliferation of human peripheral blood lymphocytes over a wide concentration range (10(-4) to 10(-10)M). At high drug concentrations (10(-3)M) significant suppression of mitogen stimulation was observed but this was accompanied by significant cytotoxicity. All three antagonists were effective in reversing the suppression of PHA-stimulation of HPBL induced by Propecia Normal Dosage exogenous histamine. Reversal of histamine-induced immunosuppression was obtained at drug concentrations (2.0 X 10(-4) to 1.0 X 10(-6)M) which were non-toxic and did not affect PHA-induced proliferation in the absence of histamine. Ranitidine was the most potent antagonist in reversing histamine-mediated immunosuppression. The ability of structurally-diverse H2-receptor antagonists to modify the action of histamine on lymphocyte function lends support to the view that histamine exerts its effects via classical H2-receptors. The ability of ranitidine to alter lymphocyte responsiveness in analogous fashion to cimetidine indicates that the possibility of alterations in immune function should be considered in clinical studies using ranitidine and other furan-containing H2-receptor antagonists.

zantac renal dosing 2015-05-16

The influence of Propecia Order topically administered cimetidine, ranitidine, somatostatin, and vasopressin on microvessels of the jejunal villus of the rat was investigated by means of an in vivo videomicroscopy technique. For all substances a dose-response curve concerning the change of vessel diameters was obtained. All four drugs induced a significant vasoconstriction at the capillary level. Maximum vasoconstriction was achieved with vasopressin. These results strongly suggest the presence and possibly importance of H2 receptors in the intestinal vascular bed of the rat.

zantac 300mg tablets 2015-12-14

Hydroxyl radical scavengers are able to compete with deoxyribose for the hydroxyl radicals generated in a reaction mixture. We found that the H2 receptor antagonists like cimetidine, burimamide, ranitidine, famotidine and tiotidine except for being good inhibitors in histamine-stimulated gastric acid secretion, were also very powerful hydroxyl radical scavengers. Rate constants for reaction of these drugs with hydroxyl radicals ranged from 7.7 x 10(9) Ms-1 to 14.8 x 10(9) M-1 s-1. These rate constants are much higher than for the well-known hydroxyl radical scavenger mannitol (1.7 x 10(9) M-1 s-1). In this study we investigated which part of the cimetidine molecule might be responsible for its potent hydroxyl radical scavenging activity. Testing fragments of the cimetidine molecule revealed that the guanidine moiety of cimetidine had little hydroxyl radical scavenging activity. However the other part of the molecule Vasaka Herbal Medicine , the methylated imidazole with a sulfur and amino group containing side chain appeared to be a powerful hydroxyl radical scavenger.

zantac dosing directions 2017-07-30

Heliotropium indicum of the family Boraginaceae is used locally in Nigeria to treat ailments such as ulcer and fever. In this study, ulceration of the gastric mucosa in Wistar rats was induced via the oral administration of 80mg/kg/bodyweight of Indomethacin. Histological analyses of the stomach body wall in the rats of Groups 2 and 4 (which received 100mg/kg/bodyweight of extract before oral administration of 80mg/kg/bodyweight Indomethacin and 80mg/kg/bodyweight Indomethacin Paracetamol Suspension only respectively) showed erosion of the mucus-secreting cells, gastric pit, upper and middle parts of gastric glands and some of the parietal cells. Histological observations of the stomach body wall in rats of Group 5 (which received 200mg/kg/bodyweight of extract before oral administration of 80mg/kg/bodyweight of Indomethacin) showed erosion of the mucus-secreting cells, gastric pit and the upper most part of the gastric gland. Histological observations of the stomach body wall in rats of Groups 1, 6 and 3 (which received 50mg/kg/bodyweight of Ranitidine and 400mg/kg/bodyweight of extract before oral administration of 80mg/kg/bodyweight Indomethacin; and only 80mg/kg/bodyweight of Normal Saline respectively) showed normal morphological appearance of the different components of the mucosa layer. Thus, the aqueous extracts of the dried leaves of Heliotropium indicum have dose dependent histo-gastroprotective effects.

cold medicine zantac 2017-09-30

To determine whether ranitidine (Zantac) taken once or twice daily is effective for relieving symptoms of gastroesophageal reflux among pregnant women who had failed conservative measures. Elavil Lethal Dose

zantac 150 dosage 2016-02-16

Patients previously treated with H2-receptor blocking agents (cimetidine or ranitidine) exhibited a complex neurobehavioral and gastroenteric syndrome, including anxiety, insomnia, anorexia, growing thin, irritability, tachycardia, diarrhoea, nausea, vomiting Viagra 300 Mg , abdominal pain, headache, vertigo. These symptoms were dramatically reduced by administration of cimetidine or ranitidine, and reappeared with a new suspension of the therapy. The withdrawal syndrome from H2-receptor antagonists was reversed by treatment with domperidone (10 mg three times per day), a potent hyperprolactinaemic drug which does not cross the blood brain barrier. These results suggest that the drop in prolactin levels that occurs when cimetidine or ranitidine are suspended may contribute to the development of the withdrawal syndrome.

child zantac dosage 2017-05-14

Treatment with RC and RCM eradicated H Abilify Injection Cost . pylori (established by the combination of two negative results from two discrete 13C-UBTs at nominal weeks 4 and 12) from 89% (95% CI: 84-94) and 92% (95% CI: 88-97) of the observed population, and from 78% (95% CI: 72-84) and 80% (95% CI: 75-86) of the intention-to-treat population. When established only by one negative 13C-UBT result at least 28 days after the end of treatment, the respective intention-to-treat rates were 85% (95% CI: 79-90) and 88% (95% CI: 83-93). Both regimens were well-tolerated, only 6% of patients given RC and 4% given RCM discontinued treatment. Median plasma bismuth concentrations at the end of the second week of study were low, at 3.5 and 0.4 ng/ mL, respectively.

zantac 40 mg 2015-07-01

In a blinded study, 95 patients were given either 4 weeks of treatment with RBC, 400 mg bid, alone (RBC400, n = 31) or RBC, 400 mg bid Cut Arcoxia Tablets or 800 mg bid, in coprescription with clarithromycin, 250 mg qid for 14 days, followed by 14 days of RBC, 400 mg bid, alone (RBC400 + CLAR and RBC800 + CLAR, respectively; n = 32 for each). Rates of ulcer healing at week 4 and of H. pylori eradication (assessed by antral and corpus urease tests and histology and by 13C urea breath test) at week 8 were compared, together with the incidence of adverse events.