Alternatives to Blis-To-Sol Powder if You Can't Fill Your Prescription

Blis-To-Sol Powder contains undecylenic acid — one of the most effective OTC antifungal ingredients available. But if you can't find it at your local pharmacy, don't panic. Several well-studied alternatives treat the same conditions: athlete's foot, jock itch, and ringworm. Here's a plain-English breakdown of your options.

Why Is Blis-To-Sol Powder Hard to Find?

As we explain in our guide to why Blis-To-Sol Powder is hard to find, the main reason is limited retail distribution — it's made by a smaller manufacturer (Oakhurst Co.) that doesn't have shelf space in most major pharmacy chains. It's not an FDA shortage; it's just a niche product that many stores don't stock.

Alternative #1: Terbinafine (Lamisil AT) — Best Overall Substitute

Terbinafine is an allylamine antifungal available OTC under the brand name Lamisil AT. It is fungicidal — meaning it actively kills fungal cells rather than just stopping their growth. It's available as a cream, gel, spray, and powder.

Clinical data: A Cochrane review found allylamines like terbinafine achieved a 70% cure rate for tinea pedis. It often works in as little as 1-2 weeks, compared to 4 weeks for some other OTC options. It's also widely available at CVS, Walgreens, Walmart, and Target.

Best for: Athlete's foot, ringworm, moderate infections needing fast resolution

Price: $8-$20 OTC; generic terbinafine available for around $5-$10

Forms: Cream, gel, spray, powder

Alternative #2: Tolnaftate (Tinactin) — Closest Match to Blis-To-Sol

Tolnaftate is a synthetic thiocarbamate antifungal available in powder, cream, spray, and liquid forms. It's fungistatic like undecylenic acid (it stops growth rather than killing the fungus outright). Tinactin is the most recognizable brand, but generic tolnaftate is widely available.

Tolnaftate powder is particularly close to Blis-To-Sol Powder in how it's applied — you can sprinkle it between toes, on feet, and in socks and shoes. It also helps with moisture control, similar to the undecylenic acid powder formulation.

Best for: Athlete's foot, jock itch, ringworm; prevention after treatment

Cure rate: 64% for tinea pedis (Cochrane review)

Price: $5-$15 OTC

Alternative #3: Clotrimazole (Lotrimin AF) — Broad Spectrum Option

Clotrimazole is an azole antifungal available OTC as Lotrimin AF cream. It works by disrupting the fungal cell membrane and is effective against a broad range of fungal species, including dermatophytes (the cause of athlete's foot) and Candida.

While its cure rate for tinea pedis (47% in the Cochrane review) is lower than undecylenic acid or terbinafine, it is widely stocked and well-tolerated. It may be a better choice if you suspect a mixed fungal/yeast infection.

Best for: Mixed infections, jock itch, ringworm; good for sensitive skin

Price: $5-$15 OTC; generic widely available

Alternative #4: Miconazole (Desenex, Zeasorb-AF) — Good Powder Option

Miconazole is another azole antifungal available OTC in powder and cream forms. Desenex and Zeasorb-AF are common brands. The powder formulation is especially useful for athlete's foot because it absorbs moisture, similar to Blis-To-Sol Powder.

Best for: Athlete's foot, jock itch; moisture control

Price: $5-$15 OTC

Comparing the Alternatives: Which Is Right for You?

Here's a quick comparison to help you choose:

Fastest results: Terbinafine (Lamisil AT) — often effective in 1-2 weeks

Closest to Blis-To-Sol Powder formulation: Tolnaftate powder (Tinactin powder)

Best for sensitive skin: Clotrimazole (Lotrimin AF)

Best moisture control powder: Miconazole or tolnaftate powder

Still Want to Find Blis-To-Sol Powder?

If you prefer the original product, check out our guide on how to find Blis-To-Sol Powder in stock near you. You can also use medfinder to have pharmacies in your area checked automatically.