Buy Zentel (Albendazole) Online in the USA: Complete 2026 Guide

What Is Zentel?

Zentel is the GlaxoSmithKline (GSK) brand name for albendazole 400mg tablets, one of the World Health Organization's essential broad-spectrum anthelmintic medicines. Albendazole is used to treat a wide range of parasitic worm infections, including hookworm, roundworm, whipworm, pinworm, tapeworm (Taenia species), and the more serious systemic infections neurocysticercosis and hydatid disease. It has been on the market since the early 1980s and remains a first-line option for many indications globally.

In the United States, albendazole is FDA-approved as the brand Albenza (also GSK) at 200mg strength, priced at hundreds of dollars per tablet for private patients. The identical 400mg Zentel tablets manufactured for international markets are legally importable for personal use and priced at approximately $15 per pack, offering roughly 90 percent savings for uninsured patients or for those whose insurance does not cover the branded product.

What Does Zentel (Albendazole) Treat?

Albendazole works by binding to parasite beta-tubulin, disrupting microtubule polymerization and blocking glucose uptake. Parasites depleted of energy die within 24 to 72 hours of drug exposure. Approved and off-label uses include:

• Hydatid disease (echinococcosis) caused by Echinococcus granulosus or E. multilocularis. Long courses (28 days on, 14 days off, up to 3 cycles) are used.
• Neurocysticercosis caused by pork tapeworm larvae in brain tissue. Combined with corticosteroids for symptom management.
• Ascariasis (roundworm), enterobiasis (pinworm), trichuriasis (whipworm), hookworm (ancylostomiasis, necatoriasis). Single 400mg dose is usually curative.
• Giardiasis. Second-line option after metronidazole or tinidazole; typically 400mg daily for 5 days.
• Strongyloidiasis. Alternative to ivermectin when ivermectin cannot be used.
• Cutaneous larva migrans (creeping eruption). Short course (3 to 7 days) or single high dose.

For choosing between albendazole and other benzimidazole anthelmintics, see our mebendazole vs albendazole comparison and fenbendazole vs mebendazole comparison. For choosing between drug classes see ivermectin vs mebendazole.

Zentel 400mg Dosing

Standard dosing depends on the parasitic infection being treated. All doses should ideally be taken with a fatty meal, since fat increases albendazole absorption by 5 to 6 fold and improves therapeutic effect for systemic infections. For luminal (intestinal-only) infections, absorption is less critical.

• Pinworm, roundworm, hookworm, whipworm (adults and children over 2 years): 400mg (one Zentel tablet) as a single dose. For pinworm, repeat after 2 weeks to catch re-infection.
• Strongyloidiasis: 400mg twice daily for 3 to 7 days.
• Giardiasis: 400mg once daily for 5 days.
• Cutaneous larva migrans: 400mg once daily for 3 to 5 days.
• Neurocysticercosis: 15 mg per kg per day in two divided doses for 8 to 30 days, with corticosteroids and anticonvulsants as clinically indicated. This is specialist territory.
• Hydatid disease: 400mg twice daily for 28-day cycles, separated by 14-day breaks, for up to 3 cycles. Also specialist territory.

For an overview of parasitic diagnosis and workup, see our intestinal worm treatment guide.

Zentel and Albendazole Products Available for USA Delivery

SafeRxPills stocks WHO-GMP certified albendazole tablets and related benzimidazole anthelmintics. Shipped to US addresses in plain unmarked packaging with 7 to 18 day tracked delivery.

For the full US-market antiparasitic lineup, see our fenbendazole USA guide, mebendazole USA guide, and ivermectin USA guide.

Albenza (US Brand) vs Zentel (International Brand): Same Drug

Albenza is the US-approved GSK brand of albendazole, sold as 200mg tablets. Zentel is the international GSK brand of the same molecule at 400mg strength. Both are manufactured by the same company under global GMP standards. The differences are:

• Strength per tablet: Zentel is 400mg per tablet vs Albenza's 200mg per tablet, meaning fewer tablets are needed for typical dosing schedules.
• Price: Albenza in the US pharmacy market is priced at hundreds of dollars per tablet for uninsured patients (a single 400mg dose using two Albenza tablets can cost several hundred dollars). Zentel 400mg imported through international pharmacies is approximately $15 for a pack.
• Regulatory pathway: Albenza is FDA-approved and prescribed via US pharmacies. Zentel from international pharmacies uses the FDA Personal Importation policy which allows individuals to import a 3-month supply of a prescription medication for personal use, especially when the equivalent US-approved product is inaccessible or unaffordable.

Side Effects and Safety

Short-course albendazole (single dose or up to 7 days) is generally well tolerated. Common effects include:

• Mild abdominal discomfort, nausea, or diarrhea
• Headache (2 to 5 percent of patients)
• Transient elevation of liver enzymes (rare with short courses, more common with long courses for hydatid disease and neurocysticercosis)

Long-course treatment (28+ days) requires liver function and blood count monitoring. Serious rare adverse effects include reversible bone marrow suppression, hepatotoxicity, and (in neurocysticercosis) a paradoxical worsening of neurological symptoms from cyst-death inflammation, which is why corticosteroids are co-administered.

Contraindications: Do not use during pregnancy (category D in Australia, similar restrictions elsewhere), especially in the first trimester, due to teratogenic effects observed in animals. Women of reproductive age should use reliable contraception during and for one month after treatment. Do not use in patients with retinal cysticercosis without ophthalmologic evaluation, as parasite death can damage the retina.

Delivery, Payment and Tracking for US Buyers

• Delivery: 7 to 18 business days to all US states via tracked international courier
• Shipping: Tracked with delivery confirmation on request
• Packaging: Plain unmarked outer packaging; contents label required by US customs identifies the medicine but is not externally visible
• Payment: Card (Visa, Mastercard), cryptocurrency accepted, no card statement referencing pharmacy
• Customs: Personal-import quantities of non-controlled prescription medicine typically clear US Customs and Border Protection without inspection when accompanied by a valid prescription
• Refunds: Full reship or refund in the rare case of customs seizure

For general online-pharmacy safety guidance, see is it safe to buy medicine online.

Related Reading

• Mebendazole vs Albendazole: Which Is Right for Your Infection
• Fenbendazole vs Mebendazole Comparison
• Ivermectin vs Mebendazole: Choosing Between Classes
• Intestinal Worm Treatment: Complete Guide
• Niclosamide: The Antiparasitic That Does More Than Tapeworm
• Ivermectin and Fenbendazole Combined Use
• What Is Ivermectin?
• Is It Safe to Buy Medicine Online?

Medical disclaimer: This article is for general educational information only and does not replace professional medical advice. Parasitic infections require accurate diagnosis (typically stool sample examination or serology) before treatment. Consult a qualified doctor before starting any prescription antiparasitic medication. SafeRxPills operates as a licensed international online pharmacy supplying WHO-GMP certified generics.