Roxatidine Pharmacology


About Roxatidine
A specific ,competitive H2 receptor antagonist, Piperidine derivative, Antisecretory,antiulcer.
Mechanism of Action of Roxatidine
Roxatidine is a H2 (Histamine) receptor antagonist. Histamine is the most potent stimulus of acid secretion and acts as the common mediator. H2 receptor is a G-protein coupled receptor. It induces adenylate cyclase which converts ATP to cyclic AMP. This cyclic AMP acts on proton pump and exchange extracellular potassium ion for intracellular hydrogen ion across the parietal cell membrane. Roxatidine reversibly competes with Histamine for binding to H2 receptors on the parietal cells and predominantly inhibits basal acid secretion.
Pharmacokinets of Roxatidine
Absorption: Roxatidine is 50 % absorbed after oral administration.Distribution: Distributed mainly to body tissues in unbound form.Metabolism: Roxatidine Ranitidine undergoes metabolism in the liver. Excretion: It is excreted mainly in urine and in the faeces.
Onset of Action for Roxatidine
30-60 minutes
Duration of Action for Roxatidine
6-8 hours
Half Life of Roxatidine
Side Effects of Roxatidine
1. Headache
2. Nausea
3. Vomiting
4. Diarrhoea
5. Constipation
6. Anorexia
7. Dizziness
8. Confusion
9. Sleep disturbances
Contra-indications of Roxatidine
1. Hypersensitivity to Roxatidine
Special Precautions while taking Roxatidine
1. Hepatic impairment
2. Renal impairment
3. Acute Porphyria
Pregnancy Related Information
Old Age Related Information
Use with caution
Breast Feeding Related Information
NEONATES: Contraindicated
Children Related Information
Indications for Roxatidine
1. Duodenal ulcer
2. Benign gastric ulcer
3. Gastroesophageal reflux
4. Oesophagitis
Interactions for Roxatidine
No known interaction.
Typical Dosage for Roxatidine
Adult: 150mg / day
Duodenal ulcer, benign gastric ulcer: 150 mg /day as single dose at bed time or in 2 divided dose (morning and bed time) for 1 - 2 months.
Maintenance dose: 75 mg / day at bed time.
Gastroesophageal reflux: 150 mg / day as single dose at bed time or in 2 divided doses (morning and bed time)
Children: not recommended
Schedule of Roxatidine
Storage Requirements for Roxatidine
Store at 15 - 30 degree C in a tightly closed container. Protect from light.
Effects of Missed Dosage of Roxatidine
Take the missed dose as soon as noticed and if it is the time for next dose then skip the missed dose. Continue the regular schedule. Do not double the dose.
Effects of Overdose of Roxatidine
Give supportive measures and symptomatic treatment. Drug can be removed from the body by inducing emesis and or by gastric lavage. Activated charcoal is given to reduce the absorption of the drug. Haemodialysis can be done if necessary.

Home Delivery for Roxatidine in Your City

Medicine India is just a publishing medium for medicine related information and does not provide services or sales of medicines including roxatidine.

However, we do publish a comprehensive directory of Pharmacies, Chemists and Druggists in cities all over India. You can use this directory to find the medicine stores in your city (or area) that provide home delivery services for roxatidine and other medicines and health products. Home delivery services for roxatidine may be free or they may cost you depending on the pharmacy and the minimum order requirements. It would be best to get this clarified while placing the order.

Please be aware that you should take roxatidine only if a doctor has recommended or prescribed it. Some or all pharmacies who provide a home delivery service for medicines might insist on a prescription for roxatidine before they complete the sale. You can get this information while placing the order for roxatidine with the pharmacy.

Roxatidine is a generic medicine name and there are several brands available for it. Some of the brands for roxatidine might be better known than roxatidine itself. If the pharmacy that's willing to deliver medicines to your home doesn't have roxatidine in stock, you can ask for one of the branded alternatives for roxatidine.