Albendazole Dosing and Regimens for Pediatric Helminth Infections

Standard Single‑Dose Regimen

A single oral dose of 400 mg albendazole is the standard treatment for the most common intestinal helminths in children aged ≥2 years, and it should be taken with food to increase bioavailability up to five‑fold. 1, 2
The 400 mg single dose is effective against Ascaris lumbricoides, hookworm (Ancylostoma/Necator), and Enterobius vermicularis. 1, 2

Children older than 24 months (including a 3‑year‑old) can safely receive the 400 mg single dose; this dosing has been well‑established in pediatric studies. 1, 3, 4

Trichuris trichiura (whipworm): single‑dose albendazole yields low cure rates (5‑27%). A three‑day regimen of 400 mg albendazole daily improves efficacy. 2
Alternative for Trichuris: 3 days of mebendazole 100 mg twice daily combined with ivermectin 200 µg/kg once daily provides superior cure rates. 2
Repeat dosing: a second course after 2 weeks may be required for persistent whipworm infection. 1, 3, 4
Hookworm (moderate to heavy infection): a three‑day course of 400 mg albendazole daily is recommended, as a single dose is less effective than for Ascaris. 2
Strongyloidiasis: albendazole 400 mg twice daily for 3 days is an acceptable option, but ivermectin remains the preferred agent; urgent treatment is needed because of the risk of hyperinfection syndrome. 2, 5
Neurocysticercosis or hydatid disease: weight‑based dosing of 15 mg/kg/day divided into two doses (maximum 800 mg/day) is advised. 6

For single‑dose or 3‑day regimens, routine laboratory monitoring is not required. 1, 2
For prolonged therapy (>14 days), liver enzymes and a complete blood count should be checked every 2 weeks. 6
Chronic albendazole use can cause hepatotoxicity in up to 16 % of patients, with treatment discontinuation required in about 3.8 %. 6
Leukopenia may occur in up to 10 % of patients receiving extended courses. 6

In children >24 months who are returning travelers or migrants with unexplained eosinophilia and negative stool microscopy, a single dose of 400 mg albendazole plus ivermectin 200 µg/kg is a reasonable empirical strategy. 1, 3, 4
This approach addresses pre‑patent or otherwise undetected geohelminth infections. 1, 3