Not medical advice. This site is general information only. In an emergency call your local emergency number. For advice about your own health, speak to a doctor, pharmacist or other qualified health professional.
Hyoscyamine
Drug ClassAntispasmodic
Year Approved1930
Conditions TreatedGI cramps, IBS
AvailabilityPrescription
About Hyoscyamine
An anticholinergic medication that relieves smooth muscle spasms. Hyoscyamine or Levsin treats intestinal cramps, irritable bowel syndrome, and bladder spasms. It is derived from plants in the nightshade family including deadly nightshade. Hyoscyamine works by blocking muscarinic receptors in smooth muscle, reducing contractions. Side effects include dry mouth, blurred vision, and constipation, typical of anticholinergic medications. It provides symptomatic relief for functional GI disorders when other treatments are insufficient.