Fosfomycin Shortage Update: What Patients Need to Know in 2026

If you have tried to fill a fosfomycin prescription recently and run into trouble, you might be wondering: is this medication in a shortage? The answer in 2026 is nuanced — and understanding it will help you take the right next steps.

Is There a Fosfomycin Shortage in 2026?

As of 2026, oral fosfomycin (the single-dose 3g packet sold as Monurol or as a generic) is not on the FDA's official Drug Shortage Database as a nationally active shortage. At the manufacturer level, supply is considered adequate. This is important context: a national shortage would mean manufacturing or supply-chain disruptions making the drug scarce across the entire country.

However, many patients still encounter "out of stock" messages at individual pharmacies. These are localized availability gaps — not a national shortage — but they are real and can delay treatment when you need it most.

Why Do Pharmacy-Level Gaps Still Happen?

Even when a drug is not in a national shortage, individual pharmacies can run out for several reasons:

Low baseline stock levels: Because fosfomycin is a single-dose treatment, pharmacies sell only one packet per patient course. This means smaller pharmacies may order just 2-5 units at a time — a few prescriptions can wipe out their inventory quickly.

Seasonal UTI spikes: UTI incidence tends to increase during summer months and after sexual activity, creating demand surges that can outpace stock at lower-volume pharmacies.

Distributor backlogs: Even when manufacturers have supply, regional distributors can experience temporary backlogs that delay resupply to individual pharmacies by a few days.

Generic transition dynamics: Generic fosfomycin is now available in the U.S. As the market transitions from primarily brand-name Monurol to generics, some pharmacies may be caught in a transition period where one version is temporarily out while the other has not yet been ordered.

What About the New IV Fosfomycin (Contepo)?

In November 2025, the FDA approved an intravenous formulation of fosfomycin (Contepo) for complicated urinary tract infections, manufactured by Meitheal Pharmaceuticals. This hospital-administered IV product does not affect the retail oral supply chain and is irrelevant to patients seeking the standard Monurol packet from a retail pharmacy.

A Brief History: Has Fosfomycin Ever Been in a National Shortage?

Oral fosfomycin (Monurol) has generally remained available without being listed on the FDA's Drug Shortage Database as a formal national shortage. However, localized availability issues have been reported intermittently over the years. The drug was first FDA-approved in 1996 and has historically been used less frequently than other UTI antibiotics in the U.S., which kept demand — and stocking volumes — relatively low.

As fosfomycin's reputation for treating drug-resistant UTIs has grown — bolstered by IDSA guideline recommendations since 2011 — prescribing has increased. Higher demand against previously low stock levels is part of what contributes to today's patchy pharmacy availability.

What Patients Should Do Right Now

Don't assume your local pharmacy represents the full picture. Call or check multiple pharmacies before concluding fosfomycin is unavailable.

Use medfinder. medfinder contacts pharmacies near you to find which ones have fosfomycin in stock, saving you the time of making calls on your own.

Ask about generic vs. brand. If the pharmacy has generic fosfomycin tromethamine but not brand Monurol (or vice versa), ask your prescriber if substitution is acceptable. Both are therapeutically equivalent.

Talk to your prescriber about alternatives if needed. Nitrofurantoin and trimethoprim-sulfamethoxazole are IDSA first-line alternatives for uncomplicated UTIs.

The Bottom Line for Patients in 2026

Fosfomycin is not in a national shortage, but pharmacy-level gaps are common enough that you may need to look beyond your first-choice pharmacy. The medication is available — finding it may just take an extra step or two. For a detailed guide on how to locate it quickly, see: How to Find Fosfomycin In Stock Near You