What to do if you miss a dose of Tamiflu

Missing a dose of Tamiflu (Oseltamivir) is common — most people will skip a dose at some point during a course. The right action depends on how long since the missed dose and whether Tamiflu is taken event-driven or daily at 30mg, 45mg, 75mg. The wrong action — doubling up — is not recommended.

For daily Tamiflu

If Tamiflu is taken daily for a chronic condition, take the missed dose as soon as you remember, unless it is almost time for the next scheduled dose. In that case skip the missed dose and continue normally. According to the prescribing information for Oseltamivir, two doses should never be taken close together to "make up" for a miss.

For event-driven Tamiflu

If Tamiflu is used as needed (not on a fixed schedule), there is no "missed dose" in the conventional sense — simply take the planned dose when needed and observe the recommended gap before re-dosing. Oseltamivir is a prodrug rapidly hydrolysed by hepatic esterases to the active metabolite oseltamivir carboxylate, which selectively inhibits the neuraminidase enzyme on the surface of influenza A and…

Frequently asked questions

Should I double the dose if I missed Tamiflu? ▾

No. Doubling doses of Tamiflu to compensate is not recommended at any 30mg, 45mg, 75mg strength and increases the risk of side effects without improving efficacy. Take the next scheduled dose normally.

How many missed doses are too many? ▾

Occasional missed doses of Tamiflu are usually inconsequential. Repeated missed doses can compromise the therapeutic effect — for chronic conditions like those treated with Antiviral Medications, consistent dosing matters. If adherence is hard, discuss reminders, simpler schedules or alternative formulations with the prescriber.

More on Tamiflu

The information on this website is provided for reference and educational purposes only. It does not replace consultation with a qualified healthcare professional.