What is the shelf life of metoprolol?

Metoprolol shelf life depends on the exact product form (immediate‑release vs extended‑release), the brand/generic, and whether the bottle is unopened or already opened.

In general:
- Unopened (typical retail pharmacy stock): often about 2–3 years from the manufacture date, as indicated by the expiration date on the package.
- After opening: many solid tablets are considered stable until the labeled expiration date if stored properly (room temperature, tightly closed, away from moisture/heat).
- Liquid/compounded formulations: shelf life can be shorter and sometimes depends on storage conditions and whether it was compounded.

Best answer: check the expiration date printed on your specific metoprolol bottle/packaging and follow the storage instructions. If you tell me:
1) the exact formulation (e.g., metoprolol tartrate vs succinate / ER), and
2) whether it’s tablets vs liquid (and brand if you know it),
I can give a more specific expectation.