What is betamethasone?
Betamethasone is in a class of drugs called steroids. Betamethasone prevents the release of substances in the body that cause inflammation. Betamethasone is used to treat many different conditions such as allergic disorders, skin conditions, ulcerative colitis, arthritis, lupus, psoriasis, or breathing disorders. Betamethasone may also be used for other purposes not listed in this medication guide.