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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
* Painful menstruation (dysmenorrhea)
* Abdominal pain associated with smooth muscle spasm
## Adult Dosing
* **Meftal Spas Tablet:** 1 tablet (containing 250 mg mefenamic acid and 20 mg dicyclomine HCl) every 8 hours as needed.
* Maximum daily dose of mefenamic acid: 1500 mg.
* Maximum daily dose of dicyclomine HCl: 80 mg.
* Duration of use: Typically short-term.
## Pediatric Dosing
* **Meftal Spas is generally not recommended for pediatric use.** Dosing for individual components in children is highly variable and depends on age, weight, and indication. Mefenamic acid and dicyclomine have specific pediatric dosing guidelines that should be consulted separately if use is considered.
## Dose Adjustments
* **Renal Impairment:** Mefenamic acid is contraindicated in severe renal impairment. Caution and dose reduction may be necessary in moderate renal impairment.
* **Hepatic Impairment:** Use with caution. Mefenamic acid can exacerbate liver dysfunction.
* **Elderly:** Increased risk of adverse effects, particularly gastrointestinal bleeding and renal toxicity. Use with caution and consider lower doses.
## Contraindications
* Hypersensitivity to mefenamic acid, dicyclomine, or any component of the formulation.
* Active gastrointestinal ulcer or bleeding.
* Inflammatory bowel disease.
* Severe renal impairment.
* Severe hepatic impairment.
* Myasthenia gravis.
* Glaucoma (contraindicated for dicyclomine component).
* Obstructive uropathy (contraindicated for dicyclomine component).
* Obstructive gastrointestinal disease (contraindicated for dicyclomine component).
* Unstable heart failure.
* Concurrent use with other NSAIDs, including aspirin.
* Pregnancy (third trimester).
## Adverse Effects
* **Common (Mefenamic Acid):** Diarrhea, nausea, vomiting, abdominal pain, dyspepsia, headache.
* **Common (Dicyclomine):** Dry mouth, blurred vision, constipation, urinary retention, drowsiness, dizziness.
* **Serious:**
* **Gastrointestinal:** Severe GI bleeding, ulceration, perforation.
* **Cardiovascular:** Increased risk of myocardial infarction, stroke, and heart failure.
* **Renal:** Renal impairment, interstitial nephritis, papillary necrosis.
* **Hepatic:** Hepatotoxicity, elevated liver enzymes.
* **Hypersensitivity:** Anaphylaxis, Stevens-Johnson syndrome, toxic epidermal necrolysis.
* **Anticholinergic Toxicity:** Confusion, hallucinations, significant tachycardia, urinary retention.
## Key Drug Interactions
* **Other NSAIDs (including aspirin):** Increased risk of GI toxicity and bleeding.
* **Anticoagulants (e.g., warfarin) and Antiplatelets (e.g., aspirin, clopidogrel):** Increased risk of bleeding.
* **Corticosteroids:** Increased risk of GI ulceration and bleeding.
* **Diuretics and Antihypertensives:** NSAIDs can reduce the efficacy of these agents and increase the risk of renal toxicity.
* **Lithium:** NSAIDs can increase lithium levels.
* **Methotrexate:** NSAIDs can increase methotrexate toxicity.
* **ACE inhibitors and ARBs:** Increased risk of renal impairment.
* **Other Anticholinergics:** Additive anticholinergic effects.
* **Agents Affecting Gut Motility:** Potentiated effects with dicyclomine.
## Monitoring
* **Renal function:** Baseline and periodic monitoring, especially in elderly or those with pre-existing renal disease.
* **Liver function:** Baseline and periodic monitoring, particularly with prolonged use or in those with hepatic impairment.
* **Gastrointestinal symptoms:** Monitor for signs of bleeding (melena, hematemesis) or ulceration.
* **Blood pressure:** Monitor for increases, especially with concurrent antihypertensive therapy.
* **Signs of anticholinergic effects:** Monitor for dry mouth, blurred vision, urinary retention, constipation, and confusion.
## Clinical Pearls
* Meftal Spas provides dual action for pain and spasm, but carries the risks associated with both NSAIDs and anticholinergics.
* Due to the significant risks of NSAIDs, particularly GI bleeding and cardiovascular events, use the lowest effective dose for the shortest duration necessary.
* Anticholinergic effects (dry mouth, blurred vision, constipation, urinary retention) are more pronounced in the elderly.
* Ensure patients are not taking other NSAIDs concurrently.
* Advise patients to report any signs of GI bleeding, severe abdominal pain, or new/worsening cardiovascular symptoms.
**Disclaimer:** This information is intended for clinical pharmacists and healthcare professionals. It is essential to consult the most current official prescribing information and relevant clinical guidelines for complete and up-to-date details before making any treatment decisions.
