Famotidine 20 mg is a histamine H2-receptor antagonist that reduces stomach acid. It works by binding to H2 receptors on the stomach's parietal cells, blocking them from releasing excess hydrochloric acid, which lowers overall stomach acidity. This helps relieve heartburn and acid indigestion, and forms part of treatment for acid-related conditions such as gastroesophageal reflux disease and stomach or duodenal ulcers. Each tablet contains 20 mg of famotidine, packed 10 tablets per strip.

Famotidine 20 mg relieves mild heartburn and acid reflux and forms part of treatment for gastroesophageal reflux disease (GERD), stomach and duodenal ulcers, and rare conditions that cause excess acid secretion. It suits people with occasional bloating, sour burping, or chest burning after meals. Non-erosive GERD is typically treated with 20 mg twice daily, while ulcers may need a higher dose prescribed by a doctor. It is not meant to diagnose other serious conditions with similar symptoms, so see a doctor if symptoms do not improve.

Famotidine dosing depends on what is being treated. For acute heartburn, take 1 tablet (20 mg) with a glass of water, or about 30-60 minutes before a meal known to trigger symptoms, up to 2 tablets in 24 hours. Non-erosive GERD is usually dosed at 20 mg twice daily, morning and evening. Active duodenal or gastric ulcers are typically treated with 40 mg at bedtime for 4-8 weeks, and some patients continue a 20 mg bedtime dose for up to 12 months to prevent recurrence. It can be taken with or without food. If a dose is missed, take it as soon as remembered, but skip it if it is almost time for the next dose — never double up.

The most common side effects of famotidine are headache, dizziness, and constipation or diarrhoea, seen in 1% or more of users. Less common effects, under 1%, include nausea, vomiting, and mildly elevated liver enzymes. Most of these are mild and settle as the body adjusts. If a rash, breathing difficulty, facial swelling, or unusual heart palpitations occur, stop the medicine and seek medical help immediately, as these may signal a serious allergic reaction. Older adults or people with kidney problems should be extra cautious, since the drug clears more slowly and side effects may be more noticeable.

Anyone allergic to famotidine or other H2-receptor antagonists should avoid this medicine. People with kidney problems should check with a doctor or pharmacist first, since the dose may need adjusting. Pregnant or breastfeeding women should consult a doctor before use for peace of mind, even though studies have not shown an increased risk to the baby. Children under 12 should only use it under a doctor's guidance, and it should not be continued beyond 2 weeks without medical advice if symptoms persist.

Omeprazole GPO (Omeprazole) is a proton pump inhibitor (PPI) that blocks the final step of acid secretion directly, giving stronger and longer-lasting acid control with daily use, though it acts more slowly for acute relief than famotidine. Pariet (Rabeprazole) is also a PPI, suited to people who want once-daily long-term acid control. Famotidine, an H2-receptor antagonist, works faster but its overall acid suppression is usually milder than a PPI's with continued use. In short: choose Famotidine for quick or occasional heartburn relief, and Omeprazole GPO or Pariet for long-term daily acid reflux control.

Famotidine may affect the absorption of certain drugs that need an acidic stomach environment, such as azole antifungals, so these are best spaced apart or checked with a pharmacist before combining. If already taking another acid-reducing medicine, such as a proton pump inhibitor or an antacid, tell the pharmacist first — this includes any other medicines you take, vitamins, or herbal products, so they can confirm it is safe to combine. Anyone with an ongoing health condition or taking several medicines regularly should check with a doctor or pharmacist before starting famotidine for maximum safety.

Famotidine starts reducing acid within about 1 hour of taking it, with peak effect at 1-3 hours. The antisecretory effect lasts around 10-12 hours, so once or twice daily dosing is usually enough. Its elimination half-life is about 2.5-3.5 hours, but the acid-suppressing effect lasts much longer because the drug stays bound to H2 receptors. This makes it well suited to fast relief of acute symptoms, unlike PPIs, which need several days of build-up before reaching full acid control.

Where to Buy Famotidine?

Order online at Intimo Life for nationwide delivery across Thailand in 1-3 business days, with discreet packaging that does not reveal the product name on the parcel.