<unk>  is an analgesic that is FDA approved for the treatment of relief of the signs and symptoms of rheumatoid arthritis, osteoarthritis and related rheumatic disorder. There is a Black Box Warning for this drug as shown here.  Common adverse reactions include rash, nausea, vertigo, hearing disorder, tinnitus.
Salsalate
Allyl chloride
Methacholine
Acrolein
Hydrogen chloride
Caffeine
Squalene
Calcium oxide