Myrbetriq's primary use is in the treatment of overactive bladder. Myrbetriq has also recently been shown to activate brown fat and increase metabolism. In a small study of 15 healthy, lean men, Myrbetriq was shown to increase basal heart rate, metabolic rate and blood pressure which are signs of cardiovascular stimulation. Recently, Myrbetriq was shown to relax in vitro human and rabbit prostate smooth muscle through activation of beta3-adrenoceptor. The same group also showed that Myrbetriq promotes smooth muscle relaxation by alpha1-adrenoceptor blockade.