How long is Tamiflu liquid good after mixing?
Tamiflu (oseltamivir)
Up to 17 days in the fridge after mixing, or up to 10 days at room temperature.
- In the fridge
- Up to 17 days
- At room temperature (77°F)
- Up to 10 days
Good to know
- Shake well before each dose and keep the bottle tightly closed.
- Generic makers can word this differently. Check the label on the bottle you dispense.
Source: the FDA label on DailyMed, last checked October 14, 2026. Labels change, so check the product in hand. Questions about a patient's medicine go to the pharmacist.
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