Mirabegron mechanism of action
Beta-3 adrenergic receptor agonist
Causes detrusor muscle relaxation
Oxybutynin mechanism of action
Antimuscarinic/anticholinergic
Antispasmodic activity at detrusor muscle/bladder
Solifenacin mechanism of action
M2/M3 receptor antagonist
Used for OAB
Risk of angioedema/anaphylaxis
Oxybutynin side effects
Constipation, dry mouth, dizziness, somnolence, confusion, double vision, hyperkalemia, prolonged QTc