Please check your internet connection and try again.
# Dicyclomine Hydrochloride
## Overview
Dicyclomine hydrochloride is an anticholinergic and antispasmodic medication. It works by relaxing smooth muscle in the gastrointestinal tract, reducing spasms and cramping.
## Primary Indications
* Management of symptoms of irritable bowel syndrome (IBS), such as abdominal cramping and pain.
## Adult Dosing
* **Oral:** Typically 20 mg four times daily. The dose may be increased gradually based on patient response and tolerability, up to a maximum of 40 mg four times daily (160 mg total daily). Titrate to the lowest effective dose.
* **Intramuscular:** Usually 20 mg given every 4-6 hours as needed for acute, severe symptoms. This route is less common for chronic management.
## Pediatric Dosing
* **Oral:** Dicyclomine is generally **not recommended** for infants and children under 6 months of age due to the risk of serious anticholinergic side effects, including respiratory depression, coma, and circulatory collapse. For children over 6 months of age, the recommended dose is typically 5 mg three to four times daily. The dose may be increased to 10 mg four times daily for children 2 to 12 years of age. Dosing should be individualized and carefully monitored.
## Dose Adjustments
* No specific dose adjustments are routinely recommended for hepatic or renal impairment, but caution is advised due to potential accumulation and increased risk of anticholinergic side effects.
## Contraindications
* Hypersensitivity to dicyclomine.
* Glaucoma (narrow-angle).
* Obstructive uropathy (e.g., bladder neck obstruction).
* Gastrointestinal obstruction or atony.
* Uncontrolled ulcerative colitis or toxic megacolon.
* Myasthenia gravis.
* Infants less than 6 months of age.
## Adverse Effects
* **Common:** Dry mouth, blurred vision, dizziness, drowsiness, headache, nausea, constipation, urinary retention.
* **Serious:** Anticholinergic toxicity (confusion, hallucinations, fever, tachycardia, urinary retention, severe constipation), potential for paradoxical excitation in children.
## Key Drug Interactions
* **Anticholinergic agents:** Additive anticholinergic effects (increased risk of dry mouth, constipation, urinary retention, blurred vision, confusion).
* **CNS depressants (e.g., alcohol, sedatives, opioids):** Increased drowsiness and CNS depression.
* **Potassium chloride:** Delayed-release potassium chloride formulations can be exacerbated by decreased GI motility.
## Monitoring
* Assess for relief of abdominal pain and cramping.
* Monitor for adverse effects, particularly anticholinergic symptoms (dry mouth, blurred vision, urinary retention, constipation, drowsiness, confusion).
* In infants and young children, monitor closely for signs of respiratory depression or excitation.
## Clinical Pearls
* Titrate dose gradually to find the lowest effective dose to minimize side effects.
* Administer 30-60 minutes before meals for optimal effect in IBS management.
* Use with caution in elderly patients due to increased susceptibility to anticholinergic effects.
* Due to potential for serious adverse events in infants, especially those under 6 months, consider alternative therapies.
***
**Disclaimer:** This information is for educational purposes only and does not constitute medical advice. Always consult with a qualified healthcare provider or pharmacist to verify current prescribing information and for personalized medical advice.
