Hyoscyamine
Levsin (hyoscyamine) is an anticholinergic medication used to treat conditions involving excessive smooth muscle activity, particularly gastrointestinal disorders such as peptic ulcers and irritable bowel syndrome, as well as genitourinary conditions like bladder spasms. It works by blocking acetylcholine receptors, which reduces smooth muscle contractions and various bodily secretions.
Levsin is an anticholinergic used to treat GI and urinary tract spasms by reducing muscle contractions and secretions.
Key facts at a glance
- RxNorm
- 218003
- Generic
- Levsin
- Class
- brand-name
- Brands
- —
- Availability
- rx
- Lactation
- unknown
- Routes
- —
- Forms
- —
- Regions
- US, EU, CN, JP
- Monitoring
- —
This page is for informational purposes only.
Do not use this information to diagnose yourself or to replace a physician's advice. Always consult a qualified healthcare provider before starting, stopping, or changing any medication. If you believe you are experiencing a medical emergency, call your local emergency number immediately.
Levsin treats peptic ulcers, irritable bowel syndrome, diverticulitis, pancreatitis, cystitis, and other conditions involving smooth muscle spasms. It is also used during certain GI diagnostic procedures and for infant colic.
As an anticholinergic, Levsin blocks acetylcholine receptors in smooth muscle and glands, reducing GI and urinary tract motility, secretions, and spasms.
Avoid in patients with glaucoma, urinary retention, GI obstruction, or myasthenia gravis. Common side effects include dry mouth, blurred vision, constipation, and urinary retention. Use with caution in elderly patients. May cause drowsiness.
Official drug label
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This information is for educational purposes only and is not a substitute for professional medical advice, diagnosis, or treatment.
This content is for general informational and educational purposes only and is not a substitute for professional medical advice, diagnosis, or treatment. Always seek the guidance of a qualified healthcare provider with any questions you have about a medical condition, and never disregard professional medical advice or delay seeking it because of something you read here.
If you think you may have a medical emergency, call your local emergency number or go to the nearest emergency department immediately.
Medically reviewed by WellAlly Editorial Team Last reviewed July 26, 2026. · Read our editorial policy