Dicyclomine%25252525252525252525252525252525252525252525252525252525252525252520hydrochloride

# Dicyclomine Hydrochloride ## Overview Dicyclomine hydrochloride is an anticholinergic and antispasmodic medication used to relieve smooth muscle spasms, particularly in the gastrointestinal tract. ## Primary Indications * Irritable bowel syndrome (IBS) * Abdominal cramping and pain associated with smooth muscle spasms. ## Adult Dosing * **Oral:** * Initial dose: 20 mg by mouth four times daily. * Titrate: May increase dose gradually to 40 mg by mouth four times daily, if needed and tolerated. * Maximum: Do not exceed 80 mg per day. * **Intramuscular (IM):** * 10-20 mg IM every 4 hours, if oral administration is not feasible. This route is generally for short-term use and when oral therapy is not an option. ## Pediatric Dosing Dicyclomine is generally not recommended for use in infants less than 6 months of age due to potential for serious adverse effects including respiratory depression, coma, and ileus. Efficacy and safety beyond 6 months are not well established. Specific dosing for pediatric patients older than 6 months is not definitively established and depends on local protocols, clinical judgment, and patient response. ## Dose Adjustments No specific dose adjustments are typically required for renal or hepatic impairment, but caution is advised in patients with severe disease due to potential for altered drug metabolism and excretion. ## Contraindications * Hypersensitivity to dicyclomine. * Glaucoma (especially angle-closure glaucoma). * Obstructive uropathy (e.g., bladder neck obstruction). * Obstructive gastrointestinal disorders (e.g., achalasia, pyloric stenosis, paralytic ileus). * Severe ulcerative colitis. * Myasthenia gravis. * Infants less than 6 months of age. ## Adverse Effects Common adverse effects include dry mouth, blurred vision, constipation, urinary retention, drowsiness, dizziness, and confusion. Less common but serious effects can include tachycardia, hypertension, and exacerbation of narrow-angle glaucoma. ## Key Drug Interactions * **Other Anticholinergics:** Additive anticholinergic effects (e.g., with antihistamines, tricyclic antidepressants, antipsychotics) increasing the risk of adverse effects like dry mouth, constipation, urinary retention, blurred vision, and delirium. * **MAO Inhibitors:** May potentiate the anticholinergic effects. * **Opioid Analgesics:** Increased risk of paralytic ileus. ## Monitoring * Monitor for therapeutic response (relief of cramping/spasms). * Monitor for adverse effects, particularly anticholinergic effects like dry mouth, blurred vision, urinary retention, and constipation. * Assess mental status, especially in the elderly, for signs of confusion or delirium. ## Clinical Pearls * Dicyclomine is most effective when given before meals and at bedtime to prevent gastrointestinal spasms. * Due to its anticholinergic properties, it can mask the symptoms of serious conditions like appendicitis. * Use with caution in the elderly, as they are more susceptible to anticholinergic side effects. * Formulations include oral capsules, oral solution, and intramuscular injection. **Disclaimer:** This information is intended as a summary and does not encompass all possible aspects of dicyclomine hydrochloride therapy. Always refer to the most current prescribing information and consult with a healthcare professional for personalized medical advice.