Terbinafine
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Reviewed on November 21, 2025. by
Dr Alexandra Cristina Cowell
Writer & Clinical Content Reviewer
Next review due on
November 21, 2028.
Dr Alexandra Cristina Cowell

Last updated on Dec 04, 2025.

Clears athlete's foot within one week.

Terbinafine is an oral antifungal that can help to clear athlete’s foot within one week.[1] It’s a daily tablet which you take for up to six weeks.

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250mg
$104.95
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    Express shipping

    2-5 day shipping by secure courier

  • Consultation + Access to our clinicians

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  1. Barnetson, R. S., et al. (1998). Comparison of one week of oral terbinafine (250 mg/day) with four weeks of treatment with clotrimazole 1% cream in interdigital tinea pedis. British Journal of Dermatology, 139(4), 675-678.
Terbinafine Terbinafine

What is Terbinafine?

Terbinafine is an oral antifungal that can help treat athlete’s foot, a skin condition that causes an itchy, red, and flaky rash between or around the toes. The first choice treatments for athlete’s foot are typically topical antifungals like clotrimazole, but if that proves ineffective or your symptoms are severe, your doctor may recommend an oral treatment like Terbinafine.

Although formulations like creams or sprays containing terbinafine are approved for athlete’s foot, terbinafine tablets aren’t approved for this purpose. Even so, doctors often prescribe them, and because they’re not officially licensed for athlete’s foot, this is considered an “off-label” use.

How does Terbinafine work?

Terbinafine works by stopping the production of ergosterol, a key component of the fungal cell wall. Without a cell wall, the fungus can’t grow and survive, which eventually leads to its expiry.[1] As Terbinafine works systemically, it’s more effective than topical antifungal treatment, making it useful for stubborn cases of athletes’ foot.[2]

Will I get side effects with Terbinafine?

Like all medicines, there’s a risk of getting side effects when taking Terbinafine, although not everyone will experience them. Some common examples include:

  • Loss of appetite
  • Stomach ache
  • Diarrhea
  • Nausea
  • Joint pain
  • Rash

The side effects should subside as your body adjusts to the treatment and go away once you finish the treatment course. If you have any concerns, ask your clinician during your consultation. For the full list of side effects, check the package leaflet that comes with your medicine.

What doses of Terbinafine are there?

Terbinafine comes in a single dose of 250 mg. The typical dosage is one tablet daily for up to six weeks. Your doctor will decide how long you need to take it for based on how severe your symptoms are.

Treated trusted source:

  1. Maxfield L, et al. (2023). Terbinafine. StatPearls.
  2. Khan, S. M., & Torgerson, D. J. (2012). Oral treatments for fungal infections of the skin of the foot. The Cochrane Database of Systematic Reviews, 2012(10), CD003584.
Dr Alexandra Cristina Cowell
This page was medically reviewed by Dr Alexandra Cristina Cowell on November 21, 2025. Next review due on November 21, 2028.

How we source info.

When we present you with stats, data, opinion or a consensus, we’ll tell you where this came from. And we’ll only present data as clinically reliable if it’s come from a reputable source, such as a state or government-funded health body, a peer-reviewed medical journal, or a recognised analytics or data body. Read more in our editorial policy.

Terbinafine Terbinafine

How to take Terbinafine

The usual dose for athlete’s foot is one 250 mg tablet daily, for up to six weeks.

Swallow the tablet whole with water. It can be taken with or without food, but taking it with a light meal can reduce the risk of side effects like stomach pain and nausea.

It’s best to keep the affected area dry at all times and avoid keeping it moist or damp, as the fungus thrives in this environment.

Dr Alexandra Cristina Cowell
This page was medically reviewed by Dr Alexandra Cristina Cowell on November 21, 2025. Next review due on November 21, 2028.

How we source info.

When we present you with stats, data, opinion or a consensus, we’ll tell you where this came from. And we’ll only present data as clinically reliable if it’s come from a reputable source, such as a state or government-funded health body, a peer-reviewed medical journal, or a recognised analytics or data body. Read more in our editorial policy.

Terbinafine Terbinafine

Terbinafine isn’t suitable for everyone, and there are some things that you need to be aware of when taking it.

Here’s all the official info on it. If anything is unclear, let our doctor know, and they can talk with you about it.

Terbinafine Terbinafine

Terbinafine: FAQ

Have something specific you want to know? Search our info below, or ask our experts a question if you can’t find what you’re looking for.

How long does Terbinafine take to work?

Answer:
Terbinafine starts working from the first tablet, but it can take several weeks or months to completely clear the infection. During this time, you should take the tablets daily around the same time each day for best results.

Sometimes, the symptoms may persist even after the infection is cleared, often because it can take a while for the nail and skin to return to normal.

Can I drink alcohol while taking Terbinafine?

Answer:
While you can drink alcohol, it's best to limit how much you drink. This is because Terbinafine and alcohol are both processed in the liver; drinking alcohol can put extra stress on the liver, increasing the risk of liver damage.

Alcohol can also increase the risk of side effects like nausea, headaches, or loss of appetite.

Can I take Terbinafine while pregnant or breastfeeding?

Answer:
You shouldn’t take Terbinafine while pregnant or breastfeeding, as it might affect your baby or your health. Your doctor will only recommend taking it in serious cases and if they think it's safe for you.

How well does Terbinafine work for athlete's foot?

Answer:
Oral Terbinafine is an effective treatment for athlete's foot. In one study, 86% of patients who took daily Terbinafine for two weeks were mycologically cured – meaning the fungus was not present, compared to only 7% in the placebo group.[1]

How does Terbinafine compare with Clotrimazole?

Answer:
In a study comparing oral terbinafine taken daily for one week with topical clotrimazole 1% cream applied twice daily for four weeks to treat athlete's foot, the mycological cure rates by week four were as follows:[2]

  • Terbinafine: 72%

  • Clotrimazole: 71%


While this shows that both treatments were effective, terbinafine produced faster results than clotrimazole, which might make it more convenient for some individuals.[2]

Can I get Terbinafine through private health insurance?

Answer:
Terbinafine may be covered by your insurance plan. But sometimes, certain insurers only cover specific brands. It’s always best to ask your provider whether they cover your preferred treatment.

If it isn’t covered, you can always get it from an online service, but this will be at your own expense.

Treated trusted source:

  1. Ortonne, J., et al. (2006). Efficacy and safety of a new single-dose terbinafine 1% formulation in patients with tinea pedis (athlete’s foot): A randomized, double-blind, placebo-controlled study. Journal of the European Academy of Dermatology and Venereology, 20(10), 1307-1313.
  2. Barnetson, R. S., et al. (1998). Comparison of one week of oral terbinafine (250 mg/day) with four weeks of treatment with clotrimazole 1% cream in interdigital tinea pedis. British Journal of Dermatology, 139(4), 675-678.

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