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# Meftal spas
## Overview
Meftal spas is a combination product containing mefenamic acid (a nonsteroidal anti-inflammatory drug - NSAID) and dicyclomine hydrochloride (an anticholinergic/antispasmodic agent).
## Primary Indications
* Pain associated with smooth muscle spasms, particularly in the gastrointestinal and genitourinary tracts.
* Primary dysmenorrhea.
## Adult Dosing
* **Meftal spas:** Typically 1 tablet (mefenamic acid 250 mg, dicyclomine HCl 10 mg) orally every 8 hours as needed for pain.
* **Maximum Daily Dose:** Not explicitly defined for the combination product, but individual component maximums should be considered. For mefenamic acid, maximum is typically 1500 mg/day for short-term use. For dicyclomine, maximum is typically 40 mg/day.
## Pediatric Dosing
* Safety and efficacy in pediatric patients are not well established. Use is generally not recommended unless benefits clearly outweigh risks, and typically under specialist guidance.
## Dose Adjustments
* **Renal Impairment:** Mefenamic acid is renally excreted. Caution is advised in severe renal impairment; dose reduction may be necessary, but specific guidelines are lacking for the combination.
* **Hepatic Impairment:** Mefenamic acid can affect liver function. Use with caution; dose reduction may be considered.
* **Elderly:** Increased risk of gastrointestinal bleeding, renal, and cardiovascular adverse effects. Use with caution and at the lowest effective dose.
## Contraindications
* Hypersensitivity to mefenamic acid, dicyclomine, or other NSAIDs/anticholinergics.
* Patients with active peptic ulceration or inflammatory bowel disease.
* Patients with a history of asthma, urticaria, or allergic-type reactions after aspirin or other NSAIDs.
* Severe renal or hepatic impairment.
* Myasthenia gravis.
* Gastrointestinal obstruction or paralytic ileus.
* Glaucoma (especially narrow-angle).
* Severe ulcerative colitis.
* Infants less than 6 months of age (due to anticholinergic effects).
## Adverse Effects
* **Mefenamic Acid:** Gastrointestinal upset (nausea, vomiting, diarrhea, constipation, abdominal pain), dyspepsia, GI bleeding, ulcers, perforation, renal impairment, headache, dizziness, drowsiness, rash, Stevens-Johnson syndrome, anaphylaxis.
* **Dicyclomine:** Dry mouth, blurred vision, urinary retention, constipation, drowsiness, confusion, dizziness, tachycardia, nervousness, nausea, flushing. Anticholinergic effects are more pronounced in the elderly.
## Key Drug Interactions
* **NSAIDs:** Concomitant use with other NSAIDs or aspirin increases the risk of GI toxicity.
* **Anticoagulants (e.g., warfarin):** Increased risk of bleeding.
* **Corticosteroids:** Increased risk of GI ulceration and bleeding.
* **Diuretics and Antihypertensives:** NSAIDs can reduce the efficacy of these drugs and increase the risk of renal impairment.
* **Lithium:** NSAIDs can increase lithium levels.
* **SSRIs:** Increased risk of GI bleeding.
* **Anticholinergics:** Additive anticholinergic effects.
* **Antacids:** May decrease absorption of dicyclomine.
## Monitoring
* Monitor for signs and symptoms of GI bleeding (e.g., melena, hematemesis).
* Monitor renal and hepatic function, especially in patients with pre-existing conditions or on long-term therapy.
* Monitor for signs of anticholinergic toxicity, especially in the elderly.
* Assess pain relief and efficacy of treatment.
## Clinical Pearls
* Administer with food or milk to minimize gastrointestinal upset.
* Due to the anticholinergic component, caution is advised in conditions where anticholinergic effects are detrimental (e.g., prostatic hypertrophy, tachycardia, ulcerative colitis).
* Avoid concomitant use with other NSAIDs or aspirin unless specifically indicated and monitored.
* Use the lowest effective dose for the shortest duration necessary.
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**Disclaimer:** This information is intended for healthcare professionals. Always consult the most current prescribing information and local guidelines for definitive patient management.
