What are the side effects of tamiflu; anything to worry about?

Tamiflu (oseltamivir) side effects: Oseltamivir (tamiflu) may cause side effects. Tell your doctor if any of these symptoms are severe or do not go away: nausea, vomiting, stomach pain, diarrhea, headache. Special precautions section, call a doctor immediately: rash, hives, or blisters on the skin, itching, swelling of the face or tongue, difficulty breathing or swallowing, hoarseness, changes in behavior.