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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.
## Primary Indications
Meftal spas is indicated for the relief of mild to moderate pain associated with gastrointestinal spasms, such as in irritable bowel syndrome or functional bowel disorders. It is also used for dysmenorrhea.
## Adult Dosing
The typical adult dose is one tablet (mefenamic acid 250 mg / dicyclomine hydrochloride 10 mg) three times daily, or as prescribed. Some sources suggest doses up to 500 mg of mefenamic acid every 6 hours, but the combination product limits this.
## Pediatric Dosing
Pediatric dosing for Meftal spas is not well-established and should be approached with caution. Mefenamic acid dosing in children is typically 5-7 mg/kg/dose every 6-8 hours. Dicyclomine dosing in children is usually 0.1 mg/kg/dose every 6-8 hours. Prescribing the combination product in pediatrics would require careful consideration of individual component dosing and safety profiles.
## Dose Adjustments
No specific dose adjustments are routinely recommended for renal or hepatic impairment for the combination product. However, caution is advised in patients with significant renal or hepatic disease, as mefenamic acid is renally excreted and metabolized in the liver. Elderly patients may be more susceptible to adverse effects, particularly gastrointestinal bleeding and anticholinergic side effects.
## Contraindications
* Hypersensitivity to mefenamic acid, dicyclomine, or other NSAIDs.
* History of asthma, urticaria, or allergic-type reactions after aspirin or other NSAIDs.
* Inflammatory bowel disease.
* Obstructive uropathy or gastrointestinal obstruction.
* Severe renal or hepatic impairment.
* Myasthenia gravis.
* Gastroesophageal reflux disease (GERD).
* Glaucoma (relative contraindication for dicyclomine).
* Prostatic hypertrophy (relative contraindication for dicyclomine).
* Infants less than 6 months of age (due to dicyclomine).
## Adverse Effects
Common adverse effects include:
* **Mefenamic acid:** Nausea, vomiting, diarrhea, abdominal pain, constipation, dyspepsia, dizziness, headache, drowsiness, rash. Serious risks include gastrointestinal bleeding, ulceration, perforation, cardiovascular thrombotic events, renal impairment, and hypersensitivity reactions.
* **Dicyclomine:** Dry mouth, blurred vision, urinary hesitancy, constipation, drowsiness, confusion, dizziness, increased intraocular pressure. Anticholinergic toxicity can occur, especially in the elderly or those with underlying conditions.
## Key Drug Interactions
* **Other NSAIDs (including aspirin):** Increased risk of gastrointestinal toxicity.
* **Anticoagulants (e.g., warfarin):** Increased risk of bleeding.
* **Corticosteroids:** Increased risk of gastrointestinal ulceration and bleeding.
* **SSRIs/SNRIs:** Increased risk of gastrointestinal bleeding.
* **Diuretics, ACE inhibitors, ARBs:** Reduced antihypertensive efficacy and increased risk of renal impairment.
* **Lithium:** Increased lithium levels.
* **Methotrexate:** Increased methotrexate toxicity.
* **Anticholinergic agents:** Additive anticholinergic effects.
* **Amantadine:** Additive anticholinergic effects.
* **MAO inhibitors:** May potentiate anticholinergic effects.
## Monitoring
* Monitor for signs and symptoms of gastrointestinal bleeding (melena, hematemesis, abdominal pain).
* Monitor for signs of cardiovascular events.
* Monitor renal function, especially in patients with pre-existing renal disease or those on concomitant nephrotoxic agents.
* Monitor for anticholinergic side effects, particularly in the elderly.
* Monitor for efficacy in pain relief and spasm reduction.
## Clinical Pearls
* Meftal spas should be taken with food or milk to minimize gastrointestinal upset.
* Due to the risk of drowsiness, patients should exercise caution when driving or operating machinery.
* Long-term use of NSAIDs is associated with increased risks; use the lowest effective dose for the shortest duration necessary.
* The anticholinergic component (dicyclomine) can worsen glaucoma and urinary retention.
* Be aware of the potential for mefenamic acid to cause aseptic meningitis.
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*Disclaimer: This information is intended for clinical use and does not substitute for professional medical advice. Always verify current prescribing information and consult relevant resources before making clinical decisions.*
