Head-to-head comparisons of medication uses, side effects, warnings, and more.
Key takeaways
Myrbetriq (mirabegron) and oxybutynin ER (Ditropan XL) are both used to treat overactive bladder (OAB), but they work in different ways and have different side effects. Myrbetriq is a beta-3 adrenergic agonist that helps your bladder relax to hold more urine, while oxybutynin is an anticholinergic that reduces bladder muscle spasms. Myrbetriq is taken once daily and is available only in oral form, whereas oxybutynin comes in multiple forms, including tablets, patches, and gels. Myrbetriq can cause high blood pressure and urinary tract infections, while oxybutynin commonly causes dry mouth, dizziness, and constipation. Oxybutynin might not be the best choice for older adults due to its higher risk of side effects like drowsiness and confusion. Additionally, Myrbetriq does not have a generic version available, but oxybutynin does.
Myrbetriq (mirabegron) is used to help with overactive bladder (OAB) in adults. It can also treat a bladder problem called neurogenic detrusor overactivity (NDO) in children 3 years and older. It works as a beta-3 adrenergic agonist to help the bladder hold more urine. Myrbetriq (mirabegron) is taken by mouth once a day. It comes as a brand-name or generic extended-release tablet. A solution made from granules of the medication is available for children, but it's brand name only. Side effects include high blood pressure, cold symptoms, and urinary tract infections.
Summary for Urinary antispasmodic
Prescription only
Oxybutynin is used to treat overactive bladder (OAB). Oral oxybutynin is available as a short-acting tablet and solution that is taken 2 to 4 times a day. It also comes as a long-acting tablet that's taken once daily (brand name Ditropan XL). Some common side effects of oxybutynin include dry mouth, constipation, and dizziness. Older adults typically lower doses of this medication to lower the risk for side effects.