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# Meftal Spas
## Overview
Meftal Spas is a combination product containing mefenamic acid, a non-steroidal anti-inflammatory drug (NSAID), and dicyclomine hydrochloride, an anticholinergic antispasmodic.
## Primary Indications
* Treatment of abdominal pain associated with spasms, particularly in conditions like irritable bowel syndrome and functional bowel disorders.
* Management of dysmenorrhea.
## Adult Dosing
* **Abdominal Pain/Spasms:** 1 tablet (mefenamic acid 250 mg, dicyclomine HCl 20 mg) every 8 hours, as needed. Maximum dose is typically 4 tablets per day.
* **Dysmenorrhea:** 1 tablet every 8 hours, as needed, starting at the onset of pain.
Dosing may vary based on individual patient response and local protocol.
## Pediatric Dosing
Specific pediatric dosing for Meftal Spas is not well-established. Mefenamic acid can be dosed in children over 6 months (5-10 mg/kg/dose every 6-8 hours), but the dicyclomine component in this combination may pose risks in younger children. Use in pediatrics should be guided by specialist advice and careful risk-benefit assessment.
## Dose Adjustments
* **Renal Impairment:** Use with caution. Mefenamic acid is renally excreted and accumulation can occur.
* **Hepatic Impairment:** Use with caution. Mefenamic acid is metabolized in the liver.
* **Elderly:** Increased risk of adverse effects, particularly gastrointestinal bleeding and renal toxicity. Use lowest effective dose and shortest duration.
## Contraindications
* Hypersensitivity to mefenamic acid, dicyclomine, or other NSAIDs/anticholinergics.
* Active gastrointestinal ulceration or bleeding.
* Inflammatory bowel disease (ulcerative colitis, Crohn's disease).
* Severe renal or hepatic impairment.
* Glaucoma (especially narrow-angle).
* Myasthenia gravis.
* Obstructive uropathy or gastrointestinal obstruction.
* Unstable heart failure.
* Asthma or bronchospasm triggered by NSAIDs, aspirin, or other NSAIDs.
* Late pregnancy (third trimester).
## Adverse Effects
**Common:** Nausea, vomiting, diarrhea, constipation, abdominal pain, dizziness, drowsiness, dry mouth, blurred vision, urinary retention.
**Serious:** Gastrointestinal bleeding, perforation, renal papillary necrosis, acute renal failure, hepatotoxicity, Stevens-Johnson syndrome, toxic epidermal necrolysis, cardiovascular thrombotic events (NSAID class effect), exacerbation of myasthenia gravis, heat prostration in hot weather.
## Key Drug Interactions
* **Anticoagulants (e.g., warfarin):** Increased risk of bleeding.
* **Corticosteroids:** Increased risk of GI ulceration and bleeding.
* **Other NSAIDs (including aspirin):** Increased risk of GI toxicity and renal impairment.
* **SSRIs/SNRIs:** Increased risk of GI bleeding.
* **Antihypertensives:** Mefenamic acid can reduce their efficacy.
* **Lithium:** Mefenamic acid can increase lithium levels.
* **Methotrexate:** Mefenamic acid can increase methotrexate levels and toxicity.
* **Anticholinergics/Antihistamines:** Additive anticholinergic effects.
* **Proton Pump Inhibitors (PPIs):** May reduce the risk of GI bleeding associated with NSAIDs.
## Monitoring
* **Renal function:** Baseline and periodic monitoring, especially in patients with risk factors.
* **Liver function:** Baseline and periodic monitoring, especially in patients with pre-existing liver disease.
* **Signs of GI bleeding:** Stool guaiac, monitoring for melena or hematemesis.
* **Blood pressure:** Especially in patients with hypertension.
* **Signs of anticholinergic effects:** Monitor for dry mouth, blurred vision, urinary retention, constipation.
## Clinical Pearls
* Use the lowest effective dose for the shortest duration necessary to minimize risks.
* Administer with food or milk to reduce gastrointestinal upset.
* Be aware of the cumulative anticholinergic effects, especially in the elderly or when used with other anticholinergic agents.
* Dicyclomine can mask symptoms of appendicitis or other acute abdominal conditions.
* Discontinue if significant adverse effects occur.
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**Disclaimer:** This information is intended for healthcare professionals. Always consult the most current prescribing information and relevant clinical guidelines before making any treatment decisions. Drug information can change, and individual patient factors are critical.
