Key takeaways
Myrbetriq (mirabegron) and Toviaz (fesoterodine) are both used to treat overactive bladder (OAB) but work in different ways. Myrbetriq is a beta-3 adrenergic agonist that helps relax the bladder muscles, allowing it to hold more urine. Toviaz, on the other hand, is an anticholinergic medication that blocks acetylcholine to relax the bladder muscles. Myrbetriq is available only as a brand-name medication, while Toviaz has a generic version. Myrbetriq can be used by children as young as 3 years old for neurogenic detrusor overactivity (NDO), whereas Toviaz is approved for children 6 years and older. Common side effects of Myrbetriq include high blood pressure and urinary tract infections, while Toviaz often causes dry mouth and constipation. Additionally, Toviaz interacts with many medications and can cause drowsiness and dizziness, which are less common with Myrbetriq.
