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# Meftal Spas
## Overview
Meftal Spas is a combination medication containing **mefenamic acid**, a nonsteroidal anti-inflammatory drug (NSAID), and **dicyclomine hydrochloride**, an anticholinergic antispasmodic agent.
## Primary Indications
* Symptomatic relief of mild to moderate pain associated with smooth muscle spasm, such as in irritable bowel syndrome, diverticulitis, and biliary or renal colic.
* Management of dysmenorrhea.
## Adult Dosing
* **Pain/Spasm:** Typically 1 capsule (mefenamic acid 250 mg, dicyclomine HCl 10 mg) every 8 hours as needed.
* **Dysmenorrhea:** Typically 1 capsule every 8 hours, starting at the onset of pain and continuing for the duration of the symptoms.
* Maximum daily dose: Not explicitly defined for the combination, but individual components have limits. For mefenamic acid, typically 750 mg in the first 24 hours, then 500 mg every 6-8 hours thereafter. For dicyclomine, typically 40 mg per day.
## Pediatric Dosing
* Dosing for Meftal Spas in pediatric patients has not been established. Use in children is generally not recommended due to the potential for serious adverse effects.
## Dose Adjustments
* **Renal Impairment:** Use with caution. Mefenamic acid is renally excreted.
* **Hepatic Impairment:** Use with caution. Mefenamic acid can affect liver function.
* **Elderly:** Increased risk of gastrointestinal bleeding, renal, cardiovascular, and hepatic adverse effects. Consider lower doses and closer monitoring.
## 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 (e.g., ulcerative colitis, Crohn's disease).
* Gastrointestinal obstruction, paralytic ileus, severe ulcerative colitis, toxic megacolon.
* Myasthenia gravis.
* Glaucoma (narrow-angle).
* Severe renal or hepatic impairment.
* Known risk factors for cardiovascular thrombotic events.
* Third trimester of pregnancy.
## Adverse Effects
* **Common:** Nausea, vomiting, abdominal pain, diarrhea, constipation, dizziness, headache, dry mouth, blurred vision, urinary retention, drowsiness.
* **Serious (NSAID-related):** Gastrointestinal bleeding, ulceration, perforation; cardiovascular thrombotic events (MI, stroke); renal failure; hepatic toxicity; hypersensitivity reactions.
* **Serious (Anticholinergic-related):** Delirium, confusion, hallucinations (especially in elderly), severe dry mouth, constipation, urinary retention.
## Key Drug Interactions
* **NSAIDs:** Increased risk of gastrointestinal bleeding when used with corticosteroids, anticoagulants (e.g., warfarin), SSRIs, or other NSAIDs.
* **ACE inhibitors, ARBs, diuretics:** Reduced antihypertensive effect and increased risk of renal impairment.
* **Lithium:** Increased serum lithium levels.
* **Methotrexate:** Increased risk of methotrexate toxicity.
* **Anticholinergics:** Additive anticholinergic effects with other drugs having anticholinergic properties (e.g., tricyclic antidepressants, antihistamines, antipsychotics).
* **Antacids:** May decrease absorption of dicyclomine.
## Monitoring
* **Renal function:** Baseline and periodic assessment, especially in patients with pre-existing renal disease or those at risk.
* **Liver function:** Baseline and periodic assessment, particularly with long-term use or in patients with hepatic impairment.
* **Gastrointestinal symptoms:** Monitor for signs and symptoms of bleeding (e.g., melena, hematemesis) or ulceration.
* **Cardiovascular risk factors:** Monitor for signs of cardiovascular events.
* **Anticholinergic effects:** Monitor for dry mouth, blurred vision, urinary retention, constipation, and cognitive changes, especially in the elderly.
## Clinical Pearls
* Meftal Spas should be used at the lowest effective dose for the shortest duration necessary to control symptoms.
* Administer with food or milk to minimize gastrointestinal upset.
* Caution is advised in patients with a history of asthma, as NSAIDs can trigger bronchospasm.
* Anticholinergic effects are more pronounced in the elderly.
* Discontinue use if significant GI bleeding or ulceration occurs.
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**Disclaimer:** This information is intended for healthcare professionals. It is essential to consult the most current prescribing information and relevant guidelines before making any clinical decisions. Dosing and recommendations may vary based on individual patient factors and local protocols.
