The most common side effects of Oseltamivir are:
These side effects mostly occur after the first dose of the medicine and will usually stop as treatment continues. The frequency of these side effects is reduced if the medication is taken with food. Inform your doctor if the side effects become severe and bothersome.
Rare but serious side effects may manifest as the following symptoms. Contact your doctor as soon as possible, if you notice any of the following:
If you or your child is often sick (vomiting) while taking the medicine, you should inform your doctor. You should also tell your doctor if the influenza symptoms get worse or the fever persists.