SILVER SPRING, Md. — The Food and Drug Administration has approved a new drug for treating overactive bladder made by Astellas Pharma, the agency said Thursday.
The FDA announced the approval of Myrbetriq (mirabegron), which works by relaxing the bladder muscle while the organ is filling. In patients with overactive bladder, the muscle can't be controlled, squeezes too often or squeezes without warning. Symptoms of overactive bladder include the need to urinate too often, the need to urinate immediately and incontinence. The condition affects about 33 million Americans.