Why Is Paromomycin So Hard to Find? [Explained for 2026]

If you've ever tried to fill a paromomycin prescription, you may have run into an unexpected problem: the pharmacy doesn't have it. Or they've never heard of it. Or they can order it — but it'll take a week. For patients who need this medication urgently for an intestinal parasitic infection, that delay is more than inconvenient. It can be dangerous.

So why is paromomycin so hard to find? The answer has everything to do with the current state of the US pharmaceutical supply chain — and the specific market position this drug occupies.

What Is Paromomycin?

Paromomycin is an aminoglycoside antibiotic sold under the brand name Humatin. It is FDA-approved to treat intestinal amebiasis — a parasitic infection of the intestines caused by Entamoeba histolytica — and to help manage hepatic coma, a serious complication of liver disease. Unlike most antibiotics that are absorbed into the bloodstream, paromomycin stays in the gut, making it uniquely effective against intestinal parasites while limiting systemic side effects.

It is also used off-label for cryptosporidiosis, giardiasis, Dientamoeba fragilis infections, and certain tapeworm infections. Despite its clinical importance, paromomycin is one of the most difficult antiparasitic drugs to obtain in the United States.

Why Is There No Generic Paromomycin?

This is the core of the problem. In September 2021, Avet Pharmaceuticals — the primary manufacturer of generic paromomycin oral capsules — permanently discontinued its product. No other generic manufacturer has stepped in to fill the gap. As of 2026,

the only commercially available form of paromomycin in the US is Humatin brand-name capsules, made by Waylis Therapeutics.

This is a pattern common to many antiparasitic drugs in the US. These medications treat infections that are more prevalent in lower-income populations and developing countries. As a result, they attract limited market competition. With just one manufacturer, any supply disruption — whether from production issues, raw material shortages, or business decisions — immediately results in a nationwide shortage.

The Antiparasitic Drug Fragility Problem

Paromomycin is far from alone. Drugs like iodoquinol, praziquantel, and albendazole have all faced similar challenges. The FDA's Abbreviated New Drug Application (ANDA) pathway is designed to encourage generic competition, but for rare antiparasitic drugs, the economics simply don't work. Low patient volume and limited prescribing rates mean there's little financial incentive for manufacturers to enter or stay in the market.

The result is what researchers have called a 'fragile supply chain' — one that's particularly vulnerable to disruption and leaves patients who need these medications in a difficult position.

Why Most Pharmacies Don't Stock Paromomycin

Even when Humatin is technically available from the manufacturer, most retail pharmacies don't keep it on their shelves. Here's why:

Low demand: Paromomycin is prescribed infrequently. Most pharmacies measure demand before stocking a drug. If they've filled zero paromomycin prescriptions in the past year, they have no reason to stock it.

High cost per unit: Tying up thousands of dollars in a slow-moving drug is a business risk most pharmacies avoid.

Specialty drug status: Some insurers route paromomycin through specialty pharmacies, not standard retail chains.

Single supplier: With only one manufacturer, any delay in distribution immediately ripples through the entire supply network.

What Does This Mean for Patients in 2026?

If you need paromomycin, expect to make multiple calls before you find it. Chain pharmacies like CVS or Walgreens may not stock it. Independent pharmacies and hospital-affiliated pharmacies sometimes have better luck sourcing it. You may also need to work with your prescriber to get prior authorization from your insurance before you can even fill the prescription.

The cash price without insurance can reach into the thousands of dollars for a full treatment course, though the Humatin TotalCare patient assistance program allows eligible commercially insured patients to pay as little as $5 per prescription.

How to Find Paromomycin at a Pharmacy Near You

The most efficient approach is to use a service that calls pharmacies for you.

medfinder is a paid service that contacts pharmacies in your area to find which ones have paromomycin in stock and can fill your prescription. Instead of spending hours on the phone yourself, you get results texted directly to you.

For more tips on locating paromomycin, see our detailed guide: How to Find Paromomycin in Stock Near You. You can also learn about

alternatives to paromomycin in case your pharmacy cannot source it.

Key Takeaways

The only generic manufacturer of paromomycin discontinued its product in 2021.

Only brand-name Humatin (Waylis Therapeutics) is currently available in the US.

Most retail pharmacies don't stock it due to low demand and high cost.

Prior authorization from insurance is often required.

Savings programs and patient assistance are available for eligible patients.