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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 hydrochloride is an anticholinergic and antispasmodic agent that reduces gastrointestinal smooth muscle tone and motility.
## Primary Indications
* Symptomatic relief of mild to moderate pain, particularly when associated with abdominal cramps and spasms.
* Often used for dysmenorrhea.
## Adult Dosing
* **Usual Dose:** 1-2 tablets (containing 250 mg mefenamic acid and 10 mg dicyclomine HCl per tablet) orally three times daily.
* **Maximum Dose:** Not to exceed 6 tablets (1500 mg mefenamic acid and 60 mg dicyclomine HCl) per day.
* **Duration:** Typically for short-term use (up to 7 days).
## Pediatric Dosing
* Dosing is not well-established for pediatric patients. Use with caution and consider alternative agents. If used, a pediatric specialist should be consulted.
## Dose Adjustments
* **Renal Impairment:** Caution is advised. Mefenamic acid is renally excreted. Doses may need to be reduced.
* **Hepatic Impairment:** Caution is advised. Mefenamic acid may accumulate.
* **Elderly:** Increased risk of adverse effects, especially gastrointestinal bleeding and renal toxicity. Consider lower doses and shorter durations.
## Contraindications
* Hypersensitivity to mefenamic acid, dicyclomine, or other NSAIDs.
* Patients with a history of asthma, urticaria, or allergic-type reactions after taking aspirin or other NSAIDs.
* Inflammatory bowel disease.
* Obstructive uropathy or gastrointestinal obstruction.
* Severe renal or hepatic impairment.
* Glaucoma.
* Myasthenia gravis.
* Infants less than 6 months of age.
## Adverse Effects
* **Common:** Abdominal pain, nausea, vomiting, diarrhea, constipation, dizziness, headache, rash.
* **Serious:**
* **Gastrointestinal:** GI bleeding, ulceration, perforation (NSAID class effect).
* **Cardiovascular:** Increased risk of thrombotic events (NSAID class effect).
* **Renal:** Renal impairment, interstitial nephritis, papillary necrosis.
* **Hepatic:** Hepatotoxicity.
* **Anticholinergic:** Dry mouth, blurred vision, urinary retention, constipation, confusion (especially in the elderly).
* **Hematologic:** Anemia, leukopenia.
* **Hypersensitivity:** Anaphylaxis, Stevens-Johnson syndrome, toxic epidermal necrolysis.
## Key Drug Interactions
* **Anticoagulants (e.g., warfarin):** Increased risk of bleeding.
* **Corticosteroids:** Increased risk of GI ulceration and bleeding.
* **Diuretics and Antihypertensives:** NSAIDs can reduce their efficacy and increase the risk of renal toxicity.
* **Lithium:** NSAIDs can increase lithium levels.
* **Methotrexate:** NSAIDs can increase methotrexate toxicity.
* **Other NSAIDs and Aspirin:** Increased risk of GI toxicity.
* **SSRIs/SNRIs:** Increased risk of GI bleeding.
## Monitoring
* **Renal function** (BUN, creatinine) especially in patients with pre-existing renal disease or the elderly.
* **Hepatic function** (AST, ALT) if used long-term.
* **Signs and symptoms of GI bleeding** (melena, hematemesis).
* **Blood pressure** due to potential for NSAID-induced hypertension.
* **Signs of anticholinergic effects** (dry mouth, blurred vision, urinary retention).
## Clinical Pearls
* Meftal spas should be used at the lowest effective dose for the shortest duration necessary.
* Administer with food or milk to minimize GI upset.
* Consider the risks of NSAIDs (GI bleeding, cardiovascular events, renal toxicity) and anticholinergics (especially in the elderly) when prescribing.
* Dicyclomine's anticholinergic effects can mask symptoms of surgical conditions.
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**Disclaimer:** This information is intended for clinical use and is not exhaustive. Always consult the most current prescribing information and relevant literature for complete details before making therapeutic decisions.
