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# Meftal spas
## Overview
Meftal spas is a combination product containing **mefenamic acid** and **dicyclomine hydrochloride**. Mefenamic acid is a nonsteroidal anti-inflammatory drug (NSAID) that inhibits prostaglandin synthesis. Dicyclomine is an anticholinergic antispasmodic agent used to relieve smooth muscle spasms.
## Primary Indications
* Symptomatic relief of mild to moderate pain associated with **spasmodic conditions**, particularly in the gastrointestinal and genitourinary tracts.
## Adult Dosing
* **1 tablet (250 mg mefenamic acid / 20 mg dicyclomine HCl) orally every 8 hours.**
* Maximum dose: Not explicitly established for the combination product, but generally limit mefenamic acid to 1500 mg/day and dicyclomine to 40 mg/day.
## Pediatric Dosing
* **Not established.** Use in pediatric patients is generally not recommended due to lack of safety and efficacy data.
## Dose Adjustments
* **Renal Impairment:** Use with caution. Mefenamic acid is renally excreted. Severe impairment may require dose reduction or avoidance.
* **Hepatic Impairment:** Use with caution. Mefenamic acid is metabolized in the liver.
* **Elderly:** Use with caution, particularly due to increased risk of NSAID-related adverse effects.
## Contraindications
* Hypersensitivity to mefenamic acid, dicyclomine, or other NSAIDs.
* Active peptic ulceration or inflammatory bowel disease.
* Severe renal or hepatic impairment.
* Certain cardiovascular conditions (e.g., heart failure, uncontrolled hypertension).
* Obstructive uropathy or gastrointestinal obstruction.
* Myasthenia gravis.
* Glaucoma (relative contraindication for dicyclomine).
* Lactation.
## Adverse Effects
* **Common (Mefenamic Acid):** Nausea, vomiting, diarrhea, abdominal pain, dyspepsia, headache, dizziness.
* **Common (Dicyclomine):** Dry mouth, blurred vision, urinary retention, constipation, drowsiness, dizziness.
* **Serious (Mefenamic Acid):** Gastrointestinal bleeding, ulceration, perforation; renal papillary necrosis; cardiovascular thrombotic events; hepatic failure; severe skin reactions (e.g., Stevens-Johnson syndrome, toxic epidermal necrolysis).
* **Serious (Dicyclomine):** Angle-closure glaucoma, ileus, confusion, heat prostration.
## Key Drug Interactions
* **NSAIDs:** Increased risk of gastrointestinal toxicity.
* **Anticoagulants (e.g., warfarin):** Increased risk of bleeding.
* **Corticosteroids:** Increased risk of gastrointestinal bleeding and ulceration.
* **ACE inhibitors/ARBs:** Reduced antihypertensive effect and increased risk of renal impairment.
* **Diuretics:** Reduced diuretic effect and increased risk of renal impairment.
* **Lithium:** Increased lithium levels and toxicity.
* **Other Anticholinergics:** Additive anticholinergic effects.
* **MAO inhibitors:** May potentiate anticholinergic effects.
## Monitoring
* **Renal function:** Baseline and periodic monitoring, especially in patients with pre-existing renal disease or those on concomitant nephrotoxic agents.
* **Hepatic function:** Baseline and periodic monitoring.
* **Gastrointestinal symptoms:** Monitor for signs of bleeding or ulceration.
* **Blood pressure:** Monitor for potential NSAID-induced hypertension.
* **Signs of anticholinergic effects:** Particularly in elderly patients or those with prostatic hypertrophy or glaucoma.
## Clinical Pearls
* Meftal spas should be used for the shortest duration necessary to control symptoms.
* Administer with food or milk to minimize gastrointestinal upset.
* Due to potential for drowsiness and dizziness, caution patients about operating machinery or driving.
* This combination product may not be ideal for patients requiring only an NSAID or only an antispasmodic, as it exposes them to the risks of both classes of drugs.
* Consider alternative agents if gastrointestinal bleeding risk is high or if anticholinergic effects are problematic.
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**Disclaimer:** This information is intended for clinical use and is not a substitute for professional medical advice. Always consult the most current prescribing information and relevant guidelines before making any treatment decisions. Dosing and safety can vary based on individual patient factors and local protocols.
