They could be antimuscarinic agents (oxybutynin, solifenacin, and tolterodine), tricyclic antidepressants (imipramine) or β3 adrenergic receptor agonists (mirabegron).
Antimuscarinic agents and β3 adrenergic receptor agonists relax muscles in the bladder, increasing the bladder's ability to hold urine. They also reduce bladder spasms, the urge to pass urine, and the frequency of involuntary urination (incontinence). Dosages are titrated according to the effectiveness of the medication and tolerance level of patients to the side effects.
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