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Hyosyne

Generic: Hyoscyamine Sulfate

Rx only
Anticholinergic✓ FDA-verified
View full FDA label ↗
Hyosyne is a medication used to help with various digestive and bladder issues, including peptic ulcers, spastic colitis, and symptoms of irritable bowel syndrome. It works by blocking certain signals in the body that can cause muscle spasms and excessive secretions, helping to relieve discomfort. You can take it as oral drops or elixir, with adults starting at 1 to 2 mL or teaspoonfuls every four hours, not exceeding 12 mL or teaspoonfuls in a day. It's important to know that it can cause drowsiness, so you should avoid driving or operating heavy machinery while using it. Additionally, if you have glaucoma, you should not take this medication.

Uses

  • Peptic ulcer.
  • Spastic colitis.
  • Spastic bladder.
  • Cystitis.
  • Pylorospasm.
  • Abdominal cramps.
  • Mild dysenteries.
  • Diverticulitis.
  • Acute enterocolitis.
  • Irritable bowel syndrome.
  • Neurogenic bladder.
  • Neurogenic bowel disturbances.
  • Infant colic.
  • Symptomatic relief of biliary colic.
  • Symptomatic relief of renal colic.
  • Relief of acute rhinitis symptoms.
  • Treatment of parkinsonism.

Dosage

Adults: 1 to 2 mL every four hours, max 12 mL daily.
Children 2 to under 12 years: 1/4 to 1 mL every four hours, max 6 mL daily.
Children under 2 years: Doses based on body weight, repeat every four hours.
Always follow your doctor's specific instructions for your dose.

Side effects

Common

Dry mouthUrinary hesitancyBlurred visionDrowsinessNauseaVomitingConstipationDizzinessFatigueHallucinationsShort-term memory lossConfusionHeat prostrationDiarrhea indicating possible obstruction
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Warnings

⚠ Important warnings

  • Risk of heat prostration in high temperatures.
  • Diarrhea may signal incomplete intestinal obstruction.
  • May cause drowsiness or blurred vision.
  • Psychosis possible in sensitive individuals.
  • CNS symptoms may occur and resolve after stopping the drug.

Ask about this drug

Answers pulled from the FDA label only.

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Medical Disclaimer: This content is provided for informational and educational purposes only and is not intended as medical advice. Always consult a qualified healthcare provider before taking any medication.
Data Source: Publicly available drug labeling information from the U.S. Food and Drug Administration (FDA).