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# Meftal spas
## Overview
Mefenamic acid is a nonsteroidal anti-inflammatory drug (NSAID) with analgesic and antipyretic properties. It is often used for its antispasmodic effect when combined with dicyclomine.
## Primary Indications
* Short-term treatment of mild to moderate pain, including menstrual pain (dysmenorrhea).
* Antispasmodic relief of abdominal pain associated with conditions like irritable bowel syndrome.
## Adult Dosing
* **Pain/Dysmenorrhea:** 500 mg every 4 to 6 hours as needed. Do not exceed 1000 mg as a single dose or 4000 mg per day.
* **Antispasmodic:** Dosing for Meftal spas typically involves both mefenamic acid and dicyclomine. For the combination product, usual adult dosing is 1-2 tablets every 4-6 hours as needed. Specific dosing should follow manufacturer labeling or local protocols.
## Pediatric Dosing
Mefenamic acid dosing in pediatrics is not well-established for this combination product. Dicyclomine use in infants and young children is generally not recommended due to potential for serious adverse effects. Consult current pediatric guidelines for appropriate agents and dosing if necessary.
## Dose Adjustments
* **Renal Impairment:** Use with caution. Severe renal impairment is a contraindication.
* **Hepatic Impairment:** Use with caution. Severe hepatic impairment is a contraindication.
## Contraindications
* Hypersensitivity to mefenamic acid, dicyclomine, or other NSAIDs.
* History of asthma, urticaria, or allergic-type reactions after taking aspirin or other NSAIDs.
* Peri-operative pain in the setting of coronary artery bypass graft (CABG) surgery.
* Patients with active gastrointestinal bleeding or inflammatory bowel disease.
* Severe renal or hepatic impairment.
* Use in infants under 6 months of age (for dicyclomine component).
## Adverse Effects
* **Common:** Nausea, vomiting, diarrhea, abdominal pain, dyspepsia, dizziness, headache.
* **Serious:** Gastrointestinal bleeding, ulceration, perforation; renal toxicity (including interstitial nephritis, papillary necrosis); cardiovascular thrombotic events; severe skin reactions (e.g., Stevens-Johnson syndrome, toxic epidermal necrolysis); exacerbation of asthma; hypersensitivity reactions.
## 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.
* **Other NSAIDs/Aspirin:** Increased risk of GI toxicity and additive effects.
* **ACE inhibitors/ARBs/Diuretics:** May reduce antihypertensive effect and increase risk of renal impairment.
* **Lithium/Methotrexate:** Increased serum levels and toxicity.
## Monitoring
* Monitor for signs and symptoms of GI bleeding (e.g., melena, hematemesis).
* Monitor renal function, especially in patients with pre-existing renal disease or those taking concomitant nephrotoxic agents.
* Monitor liver function tests periodically.
* Assess for signs of cardiovascular events.
## Clinical Pearls
* Meftal spas combines an NSAID (mefenamic acid) with an anticholinergic antispasmodic (dicyclomine).
* Use the lowest effective dose for the shortest duration necessary to minimize risks.
* Advise patients to avoid concurrent use of other NSAIDs or aspirin without medical advice.
* Caution is advised in patients with cardiovascular disease, hypertension, or risk factors for these conditions.
* Anticholinergic effects of dicyclomine can include blurred vision, dry mouth, constipation, and urinary retention.
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*This information is intended for healthcare professionals and is not a substitute for professional medical advice. Always verify current prescribing information with the manufacturer's package insert or other reliable sources before making clinical decisions.*
