Lamisil

(terbinafine)

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Treats fungal infections.

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Our bottom line

Lamisil (terbinafine) is first-choice treatment for many types of fungal infections, but a successful treatment course ranges from weeks to months.

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Quick facts about terbinafine
  • Drug class: Infection
  • Rx status:
  • Generic status: Lower-cost generic available (terbinafine)

Upsides

  • Effectively treats many types of fungal infections.
  • Available in cheap, generic version.
  • Lamisil (terbinafine) comes in many different formulations that's easy to apply depending on the site of infection.
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Downsides

  • Takes weeks to months to treat an infection.
  • The pill form is not a good option if you have liver disease.
  • Lamisil (terbinafine) can interfere with how many other medicines work. Talk to your doctor and pharmacist before starting any new medicines or supplements while you are on Lamisil (terbinafine).
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What to expect from terbinafine, on one page

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How it works

Lamisil (terbinafine) is an antifungal that kills fungi by disrupting the formation of its protective cell wall.

Quick facts about terbinafine
  • Drug class: Infection
  • Rx status:
  • Generic status: Lower-cost generic available (terbinafine)

Used for

Dosage forms

  • Pill
  • Cream
  • Gel
  • Spray
Tried terbinafine? Write a review!

Prices and coupons

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What to expect when you take Lamisil (terbinafine) for Fungal infection

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  • First few hoursHours
    First few daysDays
    First few weeksWeeks
    First few monthsMonths
  • Effectiveness
  • Starts to kick in
    Full effects
  • First few hoursHours
    First few daysDays
    First few weeksWeeks
    First few monthsMonths
  • Possible side effects
  • Headache
  • Diarrhea
  • Rash
  • Indigestion
  • Taste disturbance
  • Nausea
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Side effect rates for Lamisil (terbinafine)

From 602 clinical trials of terbinafine when taken for fungal infection
  • Headache
    13%13%
    10%10%
  • Diarrhea
    6%6%
    3%3%
  • Rash
    6%6%
    2%2%
  • Indigestion
    4%4%
    3%3%
  • Nausea
    3%3%
    3%3%
  • Pruritus
    3%3%
    2%2%
  • Liver enzyme abnormalities
    3%3%
    1%1%
  • Taste disturbance
    3%3%
    1%1%
  • Abdominal pain
    2%2%
    2%2%
  • Flatulence
    2%2%
    2%2%
0%
10%
20%
30%
40%
50%
60%
70%
80%
Where we got our data »

The placebo bar shows how common a side effect was for people taking a sugar pill instead of terbinafine.

Lamisil (terbinafine)
Placebo

People taking terbinafine felt side effect more

People taking terbinafine felt side effect less

No difference

Risks and Warnings for Lamisil (terbinafine)

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    • Higher risk if:
    • › Past history of liver disease
    • › Taking Lamisil (terbinafine) by mouth

    Taking Lamisil (terbinafine) can damage your liver or worsen your liver disease. Your doctor will draw your blood regularly to monitor your liver function. Talk to your doctor if you notice dark urine and/or severe abdominal pain.

Common concerns from people taking Lamisil (terbinafine)

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Pain
  • Taking Lamisil (terbinafine) can damage your liver or worsen your liver disease. Your doctor will draw your blood regularly to monitor your liver function. Talk to your doctor if you notice dark urine and/or severe abdominal pain.
  • Rarely, Lamisil (terbinafine) can lower your red blood cells and affect your body's ability to form blood clots. Talk to your doctor if you notice any unusual signs of weakness, dizziness, abdominal pain, nausea, and/or bruising.