The typical ibuprofen dosage for adults is 800 milligrams per dose, explains Drugs.com. The precise dosage depends on a patient's condition and the strength of the medicine, notes Mayo Clinic. Doctors recommend ibuprofen to treat pain.
Adults taking ibuprofen for menstrual cramps should take 400 milligrams every four hours, according to Mayo Clinic. The dosage for mild to moderate pain is 400 grams every four to six hours. For treatment of rheumatoid arthritis and osteoarthritis, patients should take between 1200 to 3200 milligrams per day split into three to four equal doses. Patients should take the drug with milk or food to prevent stomach upset, as Drugs.com explains.