The most frequently reported symptoms of ibuprofen overdose include abdominal pain, nausea, vomiting, fatigue (lethargy), and drowsiness. Other symptoms include headache, ringing in the ears (tinnitus), central nervous system depression, and convulsions. Excessive acidity of the blood (metabolic acidosis), coma, acute kidney failure, and absence of spontaneous breathing (apnea) may rarely occur.
What to do when the patient has taken more than the recommended dosage: If more than the recommended dosage has been given, consult a doctor or contact a Poison Control Center right away.