See the DrugPatentWatch profile for losartan
How long does a bottle of losartan last after you open it?
Losartan shelf life depends on the specific product and formulation (tablet strength and whether it’s the manufacturer’s bulk supply), but the usual rule is:
- Follow the expiration date on the package label for how long the medication is good.
- Once opened, losartan tablets are generally not kept for a shorter “open-bottle” time window unless the label states otherwise. Most instructions still rely on the printed expiration date.
How long does losartan last if it’s been kept at home?
To get the full labeled life, store it as directed on the label:
- Keep it in its original container (with the desiccant/liner if provided).
- Store at room temperature, away from heat, moisture, and direct light.
- Don’t use it past the expiration date, even if it looks unchanged.
What happens if losartan is expired or stored improperly?
Using expired or improperly stored losartan can reduce potency, which may make blood-pressure control less reliable. If you suspect the medication has been exposed to heat/moisture (for example, stored in a bathroom), it’s best to replace it rather than risk reduced effectiveness.
What if your pharmacy gave you a different form (or repackaged it)?
If your pharmacist repacked tablets into a new bottle, the “use by” date on the new label is the safest reference. For bulk packaging or unit-dose systems, pharmacy systems may provide a different beyond-use date than the manufacturer’s original expiration date.
How can you check the exact “how long” for your specific losartan?
Look at:
- The expiration date printed on the bottle/blister pack.
- The storage instructions on the same label.
If you tell me the exact brand name (e.g., Cozaar vs generic), strength, and what the label says for expiration/storage, I can help interpret what it means for your situation.