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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
* Management of moderate to moderately severe pain associated with smooth muscle spasms, particularly in gynecological conditions (e.g., dysmenorrhea).
## Adult Dosing
* **Oral:** 1 tablet (containing mefenamic acid 250 mg and dicyclomine HCl 20 mg) every 8 hours as needed for pain. Maximum dose: Not to exceed 4 tablets in 24 hours.
## Pediatric Dosing
* Dosing for pediatric patients is not established.
## Dose Adjustments
* **Renal Impairment:** Use with caution. Mefenamic acid is largely eliminated by the kidneys; significant impairment may necessitate dose reduction or avoidance.
* **Hepatic Impairment:** Use with caution. Monitor liver function closely.
* **Elderly:** Use with caution, especially if comorbid conditions exist (e.g., renal impairment, gastrointestinal issues). Increased risk of adverse effects.
## Contraindications
* Hypersensitivity to mefenamic acid, dicyclomine, or other NSAIDs.
* History of asthma, urticaria, or allergic-type reactions after taking aspirin or other NSAIDs.
* Inflammatory bowel disease.
* Gastrointestinal ulceration or bleeding.
* Severe renal or hepatic impairment.
* Severe heart failure.
* Glaucoma (contraindicated for dicyclomine component).
* Obstructive uropathy or gastrointestinal obstruction (contraindicated for dicyclomine component).
* Myasthenia gravis (contraindicated for dicyclomine component).
* Infants less than 6 months of age (contraindicated for dicyclomine component due to risk of respiratory depression).
## Adverse Effects
* **Common:** Nausea, vomiting, diarrhea, abdominal pain, dyspepsia, dizziness, headache, blurred vision, dry mouth, constipation.
* **Serious:** Gastrointestinal bleeding, ulceration, perforation; renal failure; hepatic impairment; cardiovascular thrombotic events; hypersensitivity reactions; exacerbation of asthma; urinary retention; confusion; CNS depression (especially in the elderly); anticholinergic effects (e.g., tachycardia, dilated pupils, decreased sweating).
## Key Drug Interactions
* **Other NSAIDs (including aspirin):** Increased risk of GI toxicity.
* **Anticoagulants (e.g., warfarin):** Increased risk of bleeding.
* **Corticosteroids:** Increased risk of GI ulceration and bleeding.
* **SSRIs/SNRIs:** Increased risk of bleeding.
* **ACE inhibitors, ARBs, Diuretics:** Reduced antihypertensive effect and increased risk of renal impairment.
* **Lithium:** Increased lithium levels.
* **Methotrexate:** Increased methotrexate toxicity.
* **Anticholinergics/Antispasmodics:** Additive anticholinergic effects.
* **Antacids/Antidiarrheals:** May decrease absorption of mefenamic acid.
## Monitoring
* **Renal function:** Especially in patients with pre-existing renal disease or those at risk.
* **Liver function:** Particularly with long-term use or in patients with hepatic impairment.
* **Gastrointestinal symptoms:** Monitor for signs of bleeding or ulceration.
* **Blood pressure:** NSAIDs can increase blood pressure.
* **Signs of anticholinergic effects:** Monitor for blurred vision, dry mouth, urinary retention, constipation, confusion.
## Clinical Pearls
* Due to the presence of dicyclomine, caution is advised in elderly patients, those with autonomic neuropathy, or other conditions predisposing to anticholinergic effects.
* Meftal Spas should be used at the lowest effective dose for the shortest duration necessary to minimize risks.
* Administer with food or milk to reduce gastrointestinal upset.
* Mefenamic acid is generally for short-term use only (up to 7 days) due to the risk of serious GI events.
*This information is intended for healthcare professionals. Always consult the most current prescribing information and professional guidelines before making clinical decisions.*
