Osimertinib is used to treat Non-Small Cell Lung Cancer with specific EGFR mutations, like T790M. It comes in two doses: 40 mg and 80 mg, both in film-coated tablets. You should take one 80 mg tablet every day.
It doesn’t matter if you’ve eaten or not. You can take it with or without food. Each bottle has 30 tablets.
That’s enough for a month’s worth of treatment if you take it every day.