Medicine guide

Famotidine

40 mg · Tablet, Coated

  • Prescription only
  • Histamine-2 Receptor Antagonist
Active substance
Famotidine
Made by
Contract Pharmacal Corp.

Quoted from the official source. Not yet reviewed by Mediclarum — the leaflet in your pack is authoritative.

What it is for

Medicine groupDigestion, stomach, diabetes and nutrition

Mediclarum has not yet retrieved and stored the official label for this product, so none of its text is shown here. Open the official leaflet

How it works

From the US prescribing label for the same active substance (Famotidine). It describes the substance, not this exact product.

Famotidine is a competitive inhibitor of histamine-2 (H 2 ) receptors.

The primary clinically important pharmacologic activity of famotidine is inhibition of gastric secretion.

Half-life2.5–3.5 h
Mostly cleared after≈ 15 hfive half-lives — our arithmetic
How it leaves the body

Famotidine is eliminated by renal (65 to 70%) and metabolic (30 to 35%) routes.

With food

Bioavailability may be slightly increased by food, or slightly decreased by antacids; however, these effects are of no clinical consequence.

Quoted from the prescribing label, sections “Mechanism of Action” and “Pharmacokinetics”. DailyMed · 2025-12-26

Safety of the active substance

From the US prescribing label for the same active substance (Famotidine). It describes the substance, not this exact product.

Must not be used by
  • Famotidine tablets are contraindicated in patients with a history of serious hypersensitivity reactions (e.g., anaphylaxis) to famotidine or other histamine-2 (H 2 ) receptor antagonists.
  • History of serious hypersensitivity reactions (e.g., anaphylaxis) to famotidine or other H 2 receptor antagonists.
Most common side effects

The most common adverse reactions are: headache, dizziness, constipation, and diarrhea.

Quoted from the US prescribing label for the same active substance. Your own pack’s leaflet is the authority for your product. DailyMed

Same active substance, strength and form in other countries

Matched on active substance, strength and kind of form only. This is not a statement that the products are equivalent or interchangeable: other ingredients, release and approved uses can differ — ask a pharmacist before swapping.

Medicine passport: one printable page to show a pharmacist abroad

Details

Made byContract Pharmacal Corp.
Active substanceFamotidine
Used inDigestion, stomach, diabetes and nutrition
Strength40 mg
FormTablet, Coated
RouteOral
Packs100 TABLET, COATED in 1 BOTTLE · 1000 TABLET, COATED in 1 BOTTLE
NDC10267-5690

Source: NDC Directory · 2026-09-13 · not reviewed by a clinician

Source: US Food and Drug Administration, NDC Directory. Reuse terms: US government work (FDA).

Other strengths and forms

187 products are sold under this name. Grouped by form; a number on a strength means several companies make it.

Show all forms · 8 forms

Same active substance

These contain the same substance. That does not mean one can replace another — ask a pharmacist.