Diloxanide%252525252525252525252525252520furoate

# Diloxanide furoate ## Overview Diloxanide furoate is a luminal amebicide used primarily to treat asymptomatic intestinal colonization by *Entamoeba histolytica*. It acts by killing trophozoites in the lumen of the bowel but has no effect on extraintestinal amebiasis. ## Primary Indications Treatment of asymptomatic intestinal infection (cyst passers) with *Entamoeba histolytica*. It is often used as a follow-up agent after treatment with a systemic amebicide (e.g., metronidazole or tinidazole) to ensure clearance of luminal cysts. ## Adult Dosing 500 mg orally three times daily for 10 days. ## Pediatric Dosing 20 mg/kg/day divided into three doses administered over 10 days. *(Note: Maximum daily dose should not exceed 1500 mg).* ## Dose Adjustments * **Renal Impairment:** No specific guidelines available; use with caution. * **Hepatic Impairment:** Use with caution in patients with severe hepatic disease as the drug is metabolized in the liver. ## Contraindications * Known hypersensitivity to diloxanide furoate. * Pregnancy: Historically, use is avoided in the first trimester unless benefit outweighs risk; consult local protocols. ## Adverse Effects * **Common:** Flatulence (prolific), nausea, vomiting, abdominal cramps, pruritus, and urticaria. * **Severe:** Rare instances of diplopia or dizziness. ## Key Drug Interactions There are no major clinically significant drug-drug interactions documented. However, it should not be relied upon as monotherapy for invasive amebiasis as it does not reach therapeutic concentrations in tissues. ## Monitoring * Monitor for gastrointestinal distress. * Follow-up stool microscopy should be performed 2–4 weeks after completion of therapy to confirm eradication of *E. histolytica* cysts. ## Clinical Pearls * **Luminal Agent Only:** Diloxanide furoate is worthless for the treatment of invasive amebiasis (e.g., amebic liver abscess or amebic dysentery). It must be paired with tissue-active agents (metronidazole/tinidazole) if invasive disease is suspected. * **Palatability:** The tablets can be crushed and mixed with food or liquid to improve swallowability in children. * **Availability:** In many regions, this drug is classified as an orphan or imported medication and may require specific pharmacy procurement. *** **Educational Disclaimer:** This information is for educational purposes only. Always verify dosing and clinical guidelines with current institutional protocols, local clinical pharmacists, or authoritative resources such as the *Red Book* or the *CDC Guidelines for the Treatment of Parasitic Infections* before prescribing.