Nurofen, which contains ibuprofen, can be taken by adults typically as 200 mg to 400 mg every 4 to 6 hours as needed for pain relief. The maximum over-the- counter dose is 1200 mg per day (equivalent to 6 tablets of 200 mg each). It is important not to take it more frequently than every 4 hours to avoid side effects. For stronger prescription doses, under medical supervision, up to 3200 mg per day may be allowed. Always take the smallest effective dose and consider taking it with food to reduce stomach irritation. The usual adult dosage of Nurofen is 1 or 2 tablets up to three times a day, leaving at least 4 hours between doses.