Cyclopam tablet
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I now have comprehensive information from authoritative pharmacology textbooks plus web sources. Here is a full clinical summary:
Cyclopam Tablet - Complete Drug Profile
Composition
| Component | Dose | Drug Class |
|---|---|---|
| Dicyclomine HCl | 20 mg | Anticholinergic / Antispasmodic |
| Paracetamol (Acetaminophen) | 500 mg | Analgesic / Antipyretic |
Manufacturer: Indoco Remedies Ltd.
Prescription status: Prescription required
Mechanism of Action
Dicyclomine
Dicyclomine is a weak muscarinic receptor antagonist that also has nonspecific direct spasmolytic effects on smooth muscle of the GI tract. It works by:
- Blocking acetylcholine at muscarinic receptors on smooth muscle
- Reducing GI spasms and hypermotility
- Relieving colicky cramping pain
Unlike pure anticholinergics (like atropine), dicyclomine has a dual mechanism - both antimuscarinic and direct antispasmodic - which contributes to its efficacy with fewer systemic anticholinergic side effects at therapeutic doses.
(Goodman & Gilman's Pharmacological Basis of Therapeutics)
Paracetamol
Paracetamol blocks the release of prostaglandins (chemical messengers) in the brain that signal pain, and inhibits central cyclooxygenase pathways to provide analgesia and antipyresis.
Indications (Uses)
| Condition | Notes |
|---|---|
| Abdominal cramps & spasmodic pain | Primary indication |
| Irritable Bowel Syndrome (IBS-D and IBS-C) | Dicyclomine is indicated for both subtypes (Lippincott Pharmacology) |
| Dysmenorrhea (menstrual cramps) | Combination of antispasmodic + analgesic is effective |
| Biliary colic | Smooth muscle relaxation |
| Renal / ureteric colic | Adjunct to NSAIDs/analgesics |
| Intestinal colic | Including infantile colic (lower doses) |
Per Tintinalli's Emergency Medicine, dicyclomine (combined with/or amitriptyline) is used specifically for IBS with pain.
Dosage
| Population | Dose |
|---|---|
| Adults | 1 tablet (Dicyclomine 20 mg + Paracetamol 500 mg), 2-3 times daily |
| Maximum frequency | Every 6-8 hours, or as directed |
| With or without food | Either is acceptable |
| Children | Per physician guidance (lower dose formulations available) |
Side Effects
Anticholinergic effects (from dicyclomine):
- Dry mouth (xerostomia)
- Blurred vision
- Drowsiness / dizziness
- Urinary retention
- Constipation
- Tachycardia
- Reduced sweating
From paracetamol:
- Nausea, vomiting (at higher doses)
- Hepatotoxicity (overdose)
Contraindications
- Allergy to dicyclomine or paracetamol
- Glaucoma (angle-closure) - anticholinergics raise intraocular pressure
- Myasthenia gravis - anticholinergics worsen neuromuscular blockade
- Urinary obstruction / urethral stricture
- Obstructive GI conditions (pyloric stenosis, achalasia)
- Gastroesophageal reflux (can worsen by relaxing lower esophageal sphincter)
- Severe hepatic disease (paracetamol component)
- Breastfeeding - dicyclomine is contraindicated
- Pregnancy - antispasmodics generally avoided, safety not established (Yamada's Textbook of Gastroenterology)
Drug Interactions
- Alcohol - increases hepatotoxicity risk (paracetamol) and drowsiness
- Other anticholinergics - additive effects (tricyclics, antihistamines, antipsychotics)
- Other paracetamol-containing products - risk of accidental overdose
- Warfarin - paracetamol can mildly potentiate anticoagulation
Important Notes for Practice
- Dicyclomine is a constipation-inducing medication - listed among muscarinic agonists that cause constipation (Sleisenger & Fordtran's GI and Liver Disease). Monitor bowel habits during use.
- IBS specificity: In IBS-D, dicyclomine is preferred over alosetron (women only), eluxadoline (avoid in alcohol use disorder), and linaclotide (IBS-C). (Lippincott Illustrated Reviews Pharmacology)
- Not for severe inflammatory conditions: Muscarinic antagonists have little effect in Salmonella dysentery, ulcerative colitis, or Crohn's disease. (Goodman & Gilman's)
- Avoid driving or operating machinery due to possible drowsiness/blurred vision.
- Maximum paracetamol dose from all sources combined should not exceed 4 g/day in adults.
Comparison: Cyclopam vs Anafortan
| Feature | Cyclopam | Anafortan |
|---|---|---|
| Antispasmodic | Dicyclomine 20 mg | Camylofin 25 mg |
| Analgesic | Paracetamol 500 mg | Paracetamol 300 mg |
| Manufacturer | Indoco Remedies | Abbott |
Sources: Goodman & Gilman's Pharmacological Basis of Therapeutics; Lippincott Illustrated Reviews: Pharmacology; Yamada's Textbook of Gastroenterology; Sleisenger & Fordtran's GI and Liver Disease; Tintinalli's Emergency Medicine; Park's Textbook of Preventive and Social Medicine
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