Medications Used to Treat Incontinence 

Medications

Mechanisms

Comments

Outlet Bladder incompetence in stress incontinence

It appears to be effective, but experience with it is limited.

Tricyclic antidepressant, anticholinergic, and alpha-agonist effects

Acceptable as temporary adjunctive therapy to reduce enuresis in children aged ≥ 6 years.

Alpha-agonist effects

Adverse effects include insomnia, anxiety, and, in men, urinary retention.

This drug is not recommended for people with heart disorders, hypertension, glaucoma, diabetes, hyperthyroidism, or benign prostatic hyperplasia.

Bladder outlet obstruction in men with urge or overflow incontinence

Alpha-adrenergic blockade

In men, alpha-adrenergic blockers relieve symptoms of outlet obstruction, may reduce postvoid residual volume and outlet resistance, and may increase urinary flow rate. Effect occurs within days to weeks.

Adverse effects include hypotension, fatigue, asthenia, and dizziness.

5-Alpha-reductase inhibition

Adverse effects are minimal and consist of sexual dysfunction (eg, decreased libido, erectile dysfunction).

Not established

erectile dysfunction.

If possible, it should not be used in patients taking nitrates or alpha-adrenergic blockers.

Detrusor overactivity in urge or stress incontinence*

Anticholinergic effects, selective

M3 muscarinic antagonism

Smooth muscle relaxation, anticholinergic (antimuscarinic) effects

Anticholinergic effects, selective M3 muscarinic antagonism

The dose should not exceed 4 mg once a day in patients with renal impairment.

Smooth muscle relaxation, anticholinergic (antimuscarinic) effects

Adverse effects include nausea, vomiting, dry mouth, and blurred vision.

Adverse effects are tolerable with doses of up to 1200 mg/day.

Anticholinergic effects

Tricyclic antidepressant, anticholinergic, and alpha-agonist effects

Beta-3 adrenergic agonist

urinary frequency).

It may increase blood pressure.

Beta-3 adrenergic agonist

Blockage of neuromuscular transmission by binding to receptor sites on nerve terminals and inhibiting the release of acetylcholine

It is used to treat adults with overactive bladder or neurogenic urge incontinence if they have an inadequate response to or cannot tolerate anticholinergic drugs.

Smooth muscle relaxation; anticholinergic, nonselective antimuscarinic, and local anesthetic effects

Efficacy may increase over time.

Adverse effects include anticholinergic effects (eg, dry mouth, constipation), which may interfere with adherence and worsen incontinence.

Adverse effects are less severe with extended-release and transdermal forms.

Anticholinergic effects

This drug must be taken on an empty stomach.

Anticholinergic effects, selective M1 and M3 muscarinic antagonism

Anticholinergic effects, selective M3 muscarinic antagonism

Because M3

Dose reduction is needed in patients with severe renal impairment.

Anticholinergic effects

Dose reduction is needed in patients with severe renal impairment.

Detrusor underactivity in overflow incontinence

Cholinergic effects

Adverse effects include flushing, tachycardia, abdominal cramps, and malaise.

* Other prostate surgical procedures rarely cause established incontinence.