Doan's

Magnesium salicylate is a common analgesic and nonsteroidal anti-inflammatory drug (NSAID) used to treat mild to moderate muscular pain. It is also used to treat headaches, general back pain, and certain joint pains like arthritis. It is found in a variety of over-the-counter (OTC) medications, most notably the brand of such medication called "Doan's Pills," as an anti-inflammatory, primarily for back-pain relief. Magnesium salicylate can be an effective OTC alternative to prescription NSAID... [wikipedia]