Omeprazole + Domperidone Pharmacology

Omeprazole + Domperidone

About Omeprazole + Domperidone
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Mechanism of Action of Omeprazole + Domperidone
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Pharmacokinets of Omeprazole + Domperidone
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Onset of Action for Omeprazole + Domperidone
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Duration of Action for Omeprazole + Domperidone
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Half Life of Omeprazole + Domperidone
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Side Effects of Omeprazole + Domperidone
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Contra-indications of Omeprazole + Domperidone
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Special Precautions while taking Omeprazole + Domperidone
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Pregnancy Related Information
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Old Age Related Information
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Breast Feeding Related Information
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Children Related Information
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Indications for Omeprazole + Domperidone
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Interactions for Omeprazole + Domperidone
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Typical Dosage for Omeprazole + Domperidone
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Schedule of Omeprazole + Domperidone
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Storage Requirements for Omeprazole + Domperidone
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Effects of Missed Dosage of Omeprazole + Domperidone
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Effects of Overdose of Omeprazole + Domperidone
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Omeprazole

About Omeprazole
Proton Pump Inhibitor, Substituted Benzimidazole, Anti-secretory,antiulcer.
Mechanism of Action of Omeprazole
Omeprazole is a proton pump inhibitor and it is a prodrug. After administration it diffuses in to the parietal cell of the stomach and accumulates in the secretory canaliculi. In the acidic medium Omeprazole is converted to sulfenamide. This sulfenamide covalently interacts with sulfhydryl (SH) group in the proton pump
(H+ K+ATPase) and inhibits the exchange of extracellular K+ for intracellular H+ ion. Omeprazole irreversibly inhibits proton pumps activity and decreases gastric acid secretion.
Pharmacokinets of Omeprazole
Absorption: Omeprazole is well absorbed after oral administration.
Distribution: It is widely distributed in the body in protein bound form.
Metabolism: Omeprazole is extensively metabolised in the liver.
Excretion: It is excreted mainly in the faeces and small amount in urine.
Onset of Action for Omeprazole
2- 5 hours
Duration of Action for Omeprazole
1 day
Half Life of Omeprazole
30 - 90 minutes
Side Effects of Omeprazole
1. Diarrhoea
2. Nausea
3. Vomiting
4. Abdominal pain
5. Constipation
6. Flatulence
7. Headache
8. Dry mouth
9. Dizziness
10. Myalgia
11. Rash
.
Contra-indications of Omeprazole
1. Hypersensitivity to Omeprazole
Special Precautions while taking Omeprazole
1. Hepatic impairment
2. Monitor gastric malignancy
3. Avoid prolonged use
Pregnancy Related Information
Contraindicated
Old Age Related Information
Use with caution
Breast Feeding Related Information
Contraindicated
Children Related Information
Contraindicated
NEONATES: Contraindicated
Indications for Omeprazole
1. Duodenal ulcer
2. Gastric ulcer
3. Zollinger- Ellison syndrome
4. Gastroesophageal reflux disease
5. Oesophagitis
6. Acid related dyspepsia
7. NSAID associated ulceration
8. Prophylaxis of acid aspiration during anesthesia
Interactions for Omeprazole
Diazepam: Half life of diazepam is increased.
Phenytoin: Increased plasma concentration of phenytoin.
Oral Anticoagulants: May prolong the elimination of warfarin.
Cyclosporine, Disulfiram: Omeprazole interferes with the metabolism of these drugs.
Ketaconazole, Ampicillin esters, Iron Salts: Omeprazole may interfere with the absorption of these drugs where gastric pH is a determinant of their bio-availability.
Typical Dosage for Omeprazole
Oral :
Adult: 10 - 20 mg / day to be taken before meals.
Duodenal ulcer: 20 mg / day to be taken 30 minutes before meals for 1-2 months.
Gastric ulcer: 20 mg / day for 1-2 months.In severe cases dose can be increased to 40 mg / day. Maintenance dose: 10 - 20 mg / day.
Zollinger- Ellison syndrome: 60 mg / day increase the dose maximum up to 360 mg/ day in 3 divided doses if needed.
Gastroesophageal reflux disease, oesophagitis: 20 mg / day for 1-2 months.
Acid related dyspepsia: 10 - 20 mg / day for 1 month.
NSAID associated ulceration: 20mg / day for 1 month.
Prophylaxis of acid aspiration during anesthesia: 40 mg in the evening before the surgery and the same dose 2 - 6 hours before the procedure.
Children: Not recommended
Schedule of Omeprazole
H
Storage Requirements for Omeprazole
Store at 15 - 30 degree C in a tightly closed container. Protect from light.
Effects of Missed Dosage of Omeprazole
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 Omeprazole
Give supportive measures and symptomatic treatment.

Domperidone

About Domperidone
Antidopaminergic, Motility stimulant,Piperidine derivative, Antiemetic, anti-vertigo.
Mechanism of Action of Domperidone
Domperidone is a potent dopamine receptor antagonist. It acts centrally and blocks the Dopamine receptor in the Chemoreceptor trigger zone and produces Antiemetic effect.
Domperidone acts peripherally in the gastrointestinal system and increases oesophageal peristalsis, oesophageal sphincter pressure and gastric motility. These all facilitates gastric emptying. Domperidone is used in migraine to relieve nausea and vomiting.
Anaesthetic adjuncts: It is used preoperatively in order to reduce the post operative vomiting.
Pharmacokinets of Domperidone
Absorption: Domperidone is rapidly absorbed after oral administration. Since it undergoes first pass metabolism oral bioavailability is only 15 %. Distribution: It is widely distributed in the body in protein bound form. Metabolism: Domperidone undergoes metabolism in the liver. Excretion: It is excreted mainly in the faeces and also in the urine.
Onset of Action for Domperidone
30 - 60 minutes
Duration of Action for Domperidone
6 - 8 hours
Half Life of Domperidone
7.5 hours
Side Effects of Domperidone
1.Diarrhoea
2.Dry mouth
3.Galactorrhoea
4.Gynaecomastia
5.Skin rash
6.Abdominal discomfort
7.Dystonic reactions
Contra-indications of Domperidone
1.Hypersensitivity to Domperidone
2.Prolactin releasing pituitary tumour(prolactinoma)
3.Gastrointestinal obstruction
Special Precautions while taking Domperidone
1.Hepatic impairment
2.Renal impairment
Pregnancy Related Information
Contraindicated
Old Age Related Information
Use with caution
Breast Feeding Related Information
Use with caution
Children Related Information
Use with caution
NEONATES: contraindicated
Indications for Domperidone
1.Nausea and vomiting associated with gastrointestinal disorder and migraine.
2.Delayed gastric emptying of functional origin
3.As an Antiemetic in patient receiving cytotoxic drugs
4.Preanaesthetic medication

Interactions for Domperidone
Digoxin: Oral dose of digoxin needs to be reduced.
Aspirin, Paracetamol & Oral Diazepam: Increases absorption of these agents.
Anticholinergic agents: Antagonize the effects of domperidone.
Phenothiazines: CNS depression enhanced by domperidone.
Antimuscarinic agents and opioids: Antagonize GI effects of domperidone.
Suxamethonium: Neuromuscular blockade enhanced by domperidone.
Typical Dosage for Domperidone
Adults: 30 - 40 mg / day in 3 - 4 divided doses 30 minutes before meals and at bed time if required. After 2 weeks dose can be increased to 60 - 80 mg / day if needed.
Migraine: 20 mg by mouth may be taken up to every 4 hours with Paracetamol, as required up to a maximum of 4 doses in 24 hours.
Children: 300 mcg / kg body weight 3 - 4 times daily 30 minutes before meals and at bed time if required
Schedule of Domperidone
H
Storage Requirements for Domperidone
Store at room temperature (15 - 30 degree C). Protect from direct sun light and moisture
Effects of Missed Dosage of Domperidone
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 Domperidone
Give supportive measures and symptomatic treatment. Drug can be removed from the body by gastric lavage and absorption of the drug can be reduced by administration of activated charcoal. To control Extrapyramidal reactions give antiparkinsonian or anticholinergic agents.

Home Delivery for Omeprazole + Domperidone in Your City

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