Ibuprofen 800 mg is normally used for reducing fever and treating pain caused by conditions like toothache, menstrual cramps, headache, back pain, arthritis or minor injury, as noted by Drugs.com. This drug is a non-steroidal anti-inflammatory medication that works by decreasing the levels of hormones that cause inflammation in body.
Although it is one of the most common drugs used for treating pain, ibuprofen should be used carefully since it might cause life-threatening heart problems in some cases, especially when used for a long time. Also, it should never be used before or right after heart bypass surgery. People who have sensitive stomachs should take ibuprofen with milk or food to reduce the negative effects.