Roundworm infection can be treated with either:

• Mebendazole orally 100 mg (i.e. 1 tablet) twice a day for 3 days if below 5 years and 500 mg as a single dose if 5 years or older.
• Albendazole as a single dose 200 mg (2 tablets) for children below 2 years and 400 mg for children of 2 years or more.