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Toenail fungus treatment: what works and what to expect

By the Life in Good Form editors. Updated 2026-10-15.

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Confirm it is fungus first

Mayo Clinic says a health care provider will examine your nails and may send clippings or debris from under the nail to a lab. It notes that other conditions, such as psoriasis, can mimic a fungal nail infection, and that yeast and bacteria can also infect nails. Knowing the cause helps choose the right treatment.

Mayo Clinic also says treatment is not always needed, and that sometimes self-care and nonprescription products clear the infection. Talk with your provider if it does not improve.

Treatment options compared

Details are from Mayo Clinic. Your provider will choose based on how severe the infection is and which fungus is causing it.

What the research shows for nail solutions

A 2020 Cochrane review included 56 studies with 12,501 participants on topical and device treatments for toenail fungus. It found high-quality evidence supporting efinaconazole 10% solution, moderate-quality evidence for tavaborole 5% solution and a ciclopirox 8% hydrolacquer, and low-quality evidence for ciclopirox 8% lacquer.

The authors concluded that although evidence supports topical treatments, rates of complete clearing with them are relatively low. They found more side effects such as skin reactions with efinaconazole and tavaborole, and were uncertain about laser and other device treatments, which were under-represented in the studies.

Home care that helps

• Soften thick nails with urea. Mayo Clinic suggests softening thick nails with urea-containing creams before trimming or filing, and notes a nonprescription urea lotion can thin nails so medicine reaches deeper. See our urea foot cream guide.
• Trim and thin. Mayo Clinic says trimming and thinning reduce pressure and pain and help an antifungal reach deeper layers.
• Trim straight across. NIDDK advises trimming toenails straight across, not cutting into the corners, and smoothing edges with an emery board.
• Nonprescription creams. Mayo Clinic lists trying nonprescription antifungal creams such as terbinafine, but warns the infection commonly comes back. Some OTC antifungal cream labels state they are not effective on nails, so read the label.

Expect a long timeline

Mayo Clinic says it can take months to see results, that you will not see the final result of pill treatment until the nail grows back completely, and that eliminating an infection may take four months or longer. Even when the nail improves, repeat infections are common. It also notes oral drugs appear to work less well in adults over age 65.

Treating athlete's foot on the skin around the nail matters too; see our antifungal foot cream guide.

Who should see a provider

• Diabetes or poor circulation. Mayo Clinic says to see a provider for foot care if you have a condition that causes poor blood flow to your feet. NIDDK says to have a foot doctor trim your toenails if they are thick or yellowed, or if you cannot see, feel or reach your feet.
• Liver or heart conditions. Mayo Clinic says oral antifungals may not be recommended for people with liver disease or congestive heart failure, or for those taking certain medicines.
• Pain, spreading or no improvement. Ask about prescription options and a lab test.

What to look for when you buy

Questions people ask

What is the best treatment for toenail fungus?

Mayo Clinic says oral antifungal drugs are often the first choice; prescription nail solutions are another option.

How long does toenail fungus treatment take?

Months. Mayo Clinic says it may take four months or longer, and results show as the nail grows out.

Do over-the-counter nail fungus products work?

Sometimes, per Mayo Clinic, but infections commonly return, and some OTC antifungal labels say they do not work on nails.

Does urea help toenail fungus?

Urea softens and thins thick nails so medicine can reach deeper, as Mayo Clinic describes.

Should I see a doctor for toenail fungus?

Yes for a lab test, and especially with diabetes, poor circulation, pain or no improvement.

Sources

• Nail fungus: Diagnosis and treatment (mayoclinic.org), Mayo Clinic
• Topical and device-based treatments for fungal infections of the toenails (pmc.ncbi.nlm.nih.gov), Cochrane Database of Systematic Reviews (PMC6984586)
• Diabetes & Foot Problems (niddk.nih.gov), National Institute of Diabetes and Digestive and Kidney Diseases
• Lamisil AT Cream (terbinafine hydrochloride) label (dailymed.nlm.nih.gov), DailyMed, National Library of Medicine
• Antifungal 1% Clotrimazole Cream label (dailymed.nlm.nih.gov), DailyMed, National Library of Medicine

Sources checked 2026-10-15.