Levsin Side Effects Center
Medical Editor: John P. Cunha, DO, FACOEP
Levsin (hyoscyamine) is used to treat different stomach and intestinal disorders, including peptic ulcer and irritable bowel syndrome. It is also used to control muscle spasms in the bladder, kidneys, or digestive tract, and to reduce stomach acid. Levsin is sometimes used to reduce tremors and rigid muscles in people with symptoms of Parkinson's disease, and is also used as a drying agent to control excessive salivation, runny nose, or excessive sweating. It is one of the principal anticholinergic/antispasmodic components of belladonna alkaloids. This medication is available in generic form. Common side effects include dizziness, drowsiness, blurred vision, dry mouth, vision problems, headache, trouble sleeping, constipation, flushing, dry skin, and decreased sweating.
Dosage of Levsin for adults and children 12 years of age and older: 1 to 2 tablets every four hours or as needed. Do not exceed 12 tablets in 24 hours. Pediatric patients 2 to under 12 years of age: ½ to 1 tablet every four hours or as needed. Do not exceed 6 tablets in 24 hours. Levsin may interact with amantadine, haloperidol, MAO inhibitors, phenothiazines, or antidepressants. Tell your doctor all medications you use. Levsin should be used only when prescribed during pregnancy. This drug passes into breast milk. Consult your doctor before breast-feeding.
Our Levsin (hyoscyamine) Side Effects Drug Center provides a comprehensive view of available drug information on the potential side effects when taking this medication.
This is not a complete list of side effects and others may occur. Call your doctor for medical advice about side effects. You may report side effects to FDA at 1-800-FDA-1088.
What is Patient Information in Detail?
Easy-to-read and understand detailed drug information and pill images for the patient or caregiver from Cerner Multum.
Levsin in Detail - Patient Information: Side Effects
Get emergency medical help if you have any of these signs of an allergic reaction: hives; difficulty breathing; swelling of your face, lips, tongue, or throat.
Stop using hyoscyamine and call your doctor at once if you have any of these serious side effects:
- confusion, hallucinations;
- unusual thoughts or behavior;
- fast, pounding, or uneven heart rate;
- rash or flushing (warmth, redness, or tingly feeling); or
- eye pain.
Less serious side effects may include:
- dizziness, drowsiness, feeling nervous;
- blurred vision, headache;
- sleep problems (insomnia);
- nausea, vomiting, bloating, heartburn, or constipation;
- changes in taste;
- problems with urination;
- decreased sweating;
- dry mouth; or
- impotence, loss of interest in sex, or trouble having an orgasm.
Read the entire detailed patient monograph for Levsin (Hyoscyamine) »
What is Patient Information Overview?
A concise overview of the drug for the patient or caregiver from First DataBank.
Levsin Overview - Patient Information: Side Effects
To relieve dry mouth, suck on (sugarless) hard candy or ice chips, chew (sugarless) gum, drink water or use a saliva substitute.
Remember that your doctor has prescribed this medication because he or she has judged that the benefit to you is greater than the risk of side effects. Many people using this medication do not have serious side effects.
Tell your doctor immediately if any of these unlikely but serious side effects occur: mental/mood changes (e.g., confusion, unusual excitement), fast/irregular heartbeat, difficulty urinating, decreased sexual ability, loss of coordination, slurred speech, eye pain, vomiting.
A very serious allergic reaction to this drug is unlikely, but seek immediate medical attention if it occurs. Symptoms of a serious allergic reaction may include: rash, itching/swelling (especially of the face/tongue/throat), severe dizziness, trouble breathing.
This is not a complete list of possible side effects. If you notice other effects not listed above, contact your doctor or pharmacist.
In the US -
Call your doctor for medical advice about side effects. You may report side effects to FDA at 1-800-FDA-1088.
In Canada - Call your doctor for medical advice about side effects. You may report side effects to Health Canada at 1-866-234-2345.
Read the entire patient information overview for Levsin (Hyoscyamine)»
What is Prescribing information?
The FDA package insert formatted in easy-to-find categories for health professionals and clinicians.
Levsin FDA Prescribing Information: Side Effects
All of the following adverse reactions have been reported with hyoscyamine sulfate. Adverse reactions may include dryness of the mouth; urinary hesitancy and retention; blurred vision; tachycardia; palpitations; mydriasis; increased ocular tension; loss of taste; headache; nervousness; drowsiness; weakness; fatigue; dizziness; insomnia; nausea; vomiting; impotence; constipation; bloated feeling; abdominal pain; diarrhea; allergic reactions or drug idiosyncrasies; urticaria and other dermal manifestations; ataxia; speech disturbance; some degree of mental confusion and/or excitement (especially in elderly persons); short-term memory loss; hallucinations; and decreased sweating.
Read the entire FDA prescribing information for Levsin (Hyoscyamine) »
Additional Levsin Information
Levsin - User Reviews
Levsin User Reviews
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Report Problems to the Food and Drug Administration
You are encouraged to report negative side effects of prescription drugs to the FDA. Visit the FDA MedWatch website or call 1-800-FDA-1088.
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