Merck Manual

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Some Drugs Used to Treat Symptoms of Autonomic Disorders

Some Drugs Used to Treat Symptoms of Autonomic Disorders

Symptom

Drug

Drug’s Effect

Fiber supplements (such as bran or psyllium)

Stool softeners (such as docusate, lactulose, or polyethylene glycol)

Fiber supplements add bulk to the stool and thus stimulate the natural contractions of the intestine. Fiber supplements and stool softeners help move food through the intestine more quickly.

Fullness in the stomach

Domperidone

Erythromycin

Metoclopramide

These drugs stimulate contractions in the digestive tract and thus help move food through it more quickly.

Avanafil

Sildenafil

Tadalafil

Vardenafil

These drugs increase the frequency, rigidity, and duration of erections.

Orthostatic hypotension (an excessive decrease in blood pressure when a person stands)

Fludrocortisone

This drug helps the body retain salt and thus helps maintain blood volume and blood pressure.

Droxidopa

Midodrine

These drugs cause small arteries (arterioles) to narrow (constrict) and thus helps maintain blood pressure.

Mirabegron

Oxybutynin

Tamsulosin

Tolterodine

These drugs relax the muscles of an overactive bladder.

Bethanechol

This drug stimulates contractions of the bladder and thus helps the bladder empty.