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# Meftal spas
## Overview
Meftal spas is a brand name for a combination product containing mefenamic acid and dicyclomine. Mefenamic acid is a nonsteroidal anti-inflammatory drug (NSAID) used for pain relief. Dicyclomine is an anticholinergic antispasmodic agent used to relieve smooth muscle spasms.
## Primary Indications
* Treatment of abdominal pain associated with smooth muscle spasms, particularly in conditions like irritable bowel syndrome (IBS).
* Relief of mild to moderate pain, including menstrual pain (dysmenorrhea).
## Adult Dosing
* **Usual dose:** 1 tablet (containing mefenamic acid 250 mg and dicyclomine hydrochloride 20 mg) three times daily.
* **Maximum dose:** Not to exceed 2 tablets three times daily. Treatment duration should generally not exceed 7 days.
## Pediatric Dosing
Specific pediatric dosing for Meftal spas (combination product) is not well-established. Dosing of individual components may be considered if appropriate and under strict medical supervision. Mefenamic acid dosing in children 6 months and older is typically 5-7 mg/kg/dose every 6-8 hours. Dicyclomine dosing in infants and children is highly variable and requires careful titration, often starting at 5 mg given orally up to four times daily.
## Dose Adjustments
* **Renal Impairment:** Use with caution. Dose reduction may be necessary, though specific guidelines are lacking. Monitor for signs of renal toxicity.
* **Hepatic Impairment:** Use with caution. Monitor liver function closely.
## 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.
* Myasthenia gravis.
* Severe renal or hepatic impairment.
* Glaucoma (relative contraindication for dicyclomine).
* Infants less than 6 months of age (due to risk of respiratory depression with dicyclomine).
## Adverse Effects
* **Common (Mefenamic Acid):** Gastrointestinal upset (nausea, vomiting, diarrhea, constipation, abdominal pain), headache, dizziness, drowsiness.
* **Common (Dicyclomine):** Dry mouth, blurred vision, constipation, urinary retention, dizziness, drowsiness, confusion.
* **Serious:**
* **Gastrointestinal:** GI bleeding, ulceration, perforation.
* **Cardiovascular:** Increased risk of serious cardiovascular thrombotic events, myocardial infarction, stroke.
* **Renal:** Renal papillary necrosis and other renal injury.
* **Hepatic:** Liver toxicity.
* **Hematologic:** Anemia, leukopenia, thrombocytopenia.
* **Allergic:** Severe skin reactions (e.g., Stevens-Johnson syndrome, toxic epidermal necrolysis), anaphylaxis.
* **Anticholinergic:** Tachycardia, heat prostration in hot weather.
## Key Drug Interactions
* **Anticoagulants (e.g., warfarin):** Increased risk of bleeding.
* **Corticosteroids:** Increased risk of GI ulceration and bleeding.
* **SSRIs/SNRIs:** Increased risk of GI bleeding.
* **Diuretics, ACE inhibitors, ARBs:** Reduced antihypertensive effect and increased risk of renal impairment.
* **Lithium:** Increased lithium levels.
* **Methotrexate:** Increased methotrexate toxicity.
* **Other NSAIDs:** Increased risk of adverse effects.
* **Anticholinergics:** Additive anticholinergic effects.
* **Antacids:** May decrease absorption of dicyclomine.
## Monitoring
* **GI Bleeding:** Monitor for signs and symptoms (melena, hematemesis, abdominal pain).
* **Renal Function:** Monitor serum creatinine and BUN, especially in patients with pre-existing renal disease or those on concomitant nephrotoxic agents.
* **Hepatic Function:** Monitor liver enzymes (ALT, AST), especially with prolonged use or in patients with hepatic impairment.
* **Blood Pressure:** Monitor for changes, particularly when combined with antihypertensives.
* **Anticholinergic Effects:** Assess for dry mouth, blurred vision, constipation, urinary retention, and cognitive impairment.
## Clinical Pearls
* Meftal spas combines an NSAID and an antispasmodic, potentially offering synergistic benefits for pain and spasm.
* Due to the risk of GI adverse effects, it should be used at the lowest effective dose for the shortest duration necessary.
* Concomitant use with alcohol or other NSAIDs should be avoided.
* Caution is advised in elderly patients, who are at higher risk for adverse effects.
* Dicyclomine can impair mental and physical abilities required for potentially hazardous tasks (e.g., driving).
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*This information is intended for clinical use and does not substitute for professional medical advice. Always consult the most current prescribing information and relevant clinical guidelines before making treatment decisions.*
