ASPIRIN 81mg is the #1 doctor-recommended brand of low dose ASA for doctor supervised daily preventative therapy in Canada.The original 81mg preventative therapy, ASPIRIN 81mg is an Enteric Coated special formulation of acetylsalicylic acid (ASA) for doctor supervised daily preventative therapy. While ASPIRIN earned its reputation as an excellent analgesic, ASPIRIN 81mg is a dedicated daily preventative therapy tool. Unlike other analgesics, such as acetaminophen or ibuprofen, ASPIRIN 81mg is specially formulated for doctor supervised preventative therapy.