Famotidine expiration?

Short answer: check the EXP date printed on the bottle/carton. Do not use famotidine after that date.

What to know by form:
- Tablets/capsules/chewables (solid forms): typically have a shelf life about 2–3 years if stored as directed (cool, dry place, away from light). Keep in the original container and tightly closed.
- Oral suspension (liquid): once prepared or opened, it usually has a shorter life. Many brands require discarding after about 14 days at room temperature (some may require refrigeration or have a different window—check the label or package insert).

If you’re unsure, or the product is past its expiration date, discard it and get a fresh supply. If you have the bottle handy, I can help you interpret the exact date printed on it (EXP or EXP date) and any lot numbers. If you’re taking famotidine for symptoms, contact a pharmacist or clinician if you’re considering using expired medicine.