Ibuprofen does not have aspirin in it because itÂ containsÂ a different active ingredient. While the active ingredient in ibuprofen is (+-) -(2)-(p-isobutylphenyl) propionic acid, aspirin contains the ingredient acetylsalicylic acid.Â Although both are nonsteroidal anti-inflammatory drugs (NSAIDs)Â used as pain relievers and sold over-the-counter, they also have different uses and side effects.
Ibuprofen was FDA approved in 1974 as an non-prescription painkiller that could be useful for dental pain, fever, menstrual cramps and soft tissue injury. Ibuprofen is stronger than aspirin and, unlike aspirin, only has a mild blood-thinning effect. It is also possible that it may be linked to kidney damage, reports Columbia University.
Aspirin is a much older form of analgesic that has uses for arthritis, dental pain, headaches, fever and body pain. Doctors may also recommend that patients take an aspirin to prevent heart attacks in cases including cardiovascular conditions. Taking aspirin on a daily basis may increase a person's risk factor for stomach ulcers and gastrointestinal bleeding, according to the Mayo Clinic.