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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
* Symptomatic relief of mild to moderate pain and spasms associated with:
* Gastrointestinal disorders (e.g., irritable bowel syndrome, diverticulitis)
* Biliary colic
* Renal colic
* Dysmenorrhea
## Adult Dosing
* **Meftal spas:** Typically 1 tablet (mefenamic acid 250 mg, dicyclomine HCl 20 mg) every 8 hours as needed.
* **Maximum dose:** Not to exceed 4 tablets per day. Duration of use should be limited.
## Pediatric Dosing
* Data for pediatric use of Meftal spas is limited. Mefenamic acid can be dosed in children, but combining it with dicyclomine in this age group is generally not recommended without specific clinical justification and expert consultation. Consult product labeling or pediatric dosing resources for age-appropriate NSAID and antispasmodic options if necessary.
## Dose Adjustments
* **Renal Impairment:** Use with caution. Mefenamic acid is renally cleared; dose reduction may be considered in severe impairment.
* **Hepatic Impairment:** Use with caution. Mefenamic acid can affect liver function.
* **Elderly:** Increased risk of adverse effects, particularly gastrointestinal bleeding and renal toxicity. Use the lowest effective dose for the shortest duration.
## Contraindications
* Hypersensitivity to mefenamic acid, dicyclomine, or other NSAIDs.
* History of asthma, urticaria, or allergic-type reactions after aspirin or other NSAIDs.
* Inflammatory bowel disease (active or history of).
* Gastrointestinal obstruction or paralytic ileus.
* Myasthenia gravis.
* Glaucoma (narrow-angle).
* Obstructive uropathy.
* Severe renal or hepatic impairment.
* Third trimester of pregnancy.
## Adverse Effects
* **Mefenamic acid:** Gastrointestinal upset, nausea, vomiting, diarrhea, abdominal pain, dyspepsia, gastritis, ulceration, bleeding, perforation. Renal toxicity (including interstitial nephritis, papillary necrosis), hepatic dysfunction, headache, dizziness, rash, photosensitivity.
* **Dicyclomine:** Dry mouth, blurred vision, urinary retention, constipation, drowsiness, confusion, tachycardia, difficulty swallowing.
## Key Drug Interactions
* **NSAIDs (other):** Increased risk of GI bleeding and renal toxicity.
* **Anticoagulants (e.g., warfarin), SSRIs, SNRIs, corticosteroids:** Increased risk of GI bleeding.
* **ACE inhibitors, ARBs, diuretics:** Reduced antihypertensive efficacy and increased risk of renal impairment.
* **Lithium:** Increased lithium levels.
* **Methotrexate:** Increased methotrexate toxicity.
* **Anticholinergics (other):** Additive anticholinergic effects.
* **Antacids:** May decrease absorption of mefenamic acid.
## Monitoring
* **GI Bleeding:** Monitor for signs and symptoms (e.g., melena, hematemesis, abdominal pain).
* **Renal Function:** Baseline and periodic monitoring of BUN and creatinine, especially in patients with pre-existing renal disease or those on diuretics/ACE inhibitors.
* **Hepatic Function:** Baseline and periodic monitoring of LFTs, especially in patients with hepatic impairment.
* **Blood Pressure:** Monitor for changes, particularly when used with antihypertensives.
* **Signs of Anticholinergic Effects:** Monitor for dry mouth, blurred vision, urinary retention, constipation, confusion, especially in the elderly.
## Clinical Pearls
* Use the lowest effective dose for the shortest duration necessary to minimize risks.
* Administer with food or milk to reduce gastrointestinal upset.
* Discontinue if signs of GI bleeding, renal impairment, or severe hypersensitivity reactions occur.
* Caution in patients with dehydration, heart failure, or hypertension due to potential fluid retention with NSAIDs.
* Dicyclomine's anticholinergic effects can be exacerbated in the elderly, potentially leading to confusion or delirium.
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**Disclaimer:** This information is intended for healthcare professionals. It is crucial to consult the most current prescribing information and relevant literature for complete and up-to-date details before making any clinical decisions. Drug formulations and availability may vary by region.
