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(terbinafine hydrochloride) Tablets

What are Lamisil Tablets?

Lamisil Tablets is a prescription antifungal medicine used to treat fungal infections of the fingernails and toenails (onychomycosis).

Your doctor should do tests to check you for fungal infection of your nails before you start Lamisil Tablets.

It is not known if Lamisil Tablets are safe and effective in children for the treatment of onychomycosis.

Who should not take Lamisil Tablets?

Do not take Lamisil Tablets if you are allergic to terbinafine hydrochloride when taken by mouth.

What should I tell my doctor before taking Lamisil Tablets?

Before you take Lamisil Tablets, tell your doctor if you:

  • have or had liver problems
  • have a weakened immune system (immunocompromised)
  • have lupus (an autoimmune disease)
  • have any other medical conditions
  • are pregnant or plan to become pregnant. It is not known if Lamisil Tablets will harm your unborn baby. You should not start taking Lamisil Tablets during pregnancy without talking with your doctor.
  • are breastfeeding or plan to breastfeed. Lamisil can pass into your breast milk and may harm your baby. Talk to your doctor about the best way to feed your baby if you take Lamisil Tablets.

Tell your doctor about all the medicines you take, including prescription and over-thecounter medicines, vitamins, and herbal supplements.

Lamisil Tablets may affect the way other medicines work and other medicines may affect how Lamisil Tablets work. Especially tell your doctor if you take:

  • a medicine for depression
  • a medicine for high blood pressure
  • a medicine for heart problems
  • desipramine (Norpramin)
  • caffeine
  • cyclosporine (Gengraf, Neoral, Sandimmune)
  • fluconazole (Diflucan)
  • rifampin (Rifater, Rifamate, Rimactane, Rifadine)
  • cimetidine (Tagamet)

If you are not sure if your medicine is one listed above, ask your doctor or pharmacist.

Know the medicines you take. Keep a list of them to show your doctor and pharmacist when you get a new medicine.

How should I take Lamisil Tablets?

  • Take Lamisil Tablets exactly as your doctor tells you to take it.
  • Lamisil comes as a tablet that you take by mouth.
  • Lamisil Tablets are usually taken:
    • 1 time each day for 6 weeks to treat fungal infections of your fingernail, or
    • 1 time each day for 12 weeks to treat fungal infections of your toenail
  • Lamisil Tablets can be taken with or without food.
  • If you miss a dose of Lamisil Tablets, take it as soon as you remember. If it is less than 4 hours before your next dose, skip the missed dose. Just take the next dose at your regular time.

If you take too many Lamisil Tablets call your doctor. You may have the following symptoms:

  • nausea
  • vomiting
  • stomach (abdomen) pain
  • dizziness
  • rash
  • frequent urination
  • headache

What should I avoid while taking Lamisil Tablets?

  • Avoid sunlight. Lamisil Tablets can make your skin sensitive to the sun and the light from sunlamps and tanning beds. You can get a severe sunburn. Use sunscreen and wear a hat and clothes that cover your skin if you have to be in sunlight. Talk to your doctor if you get sunburn.

What are the possible side effects of Lamisil Tablets?

Lamisil Tablets may cause serious side effects, including:

  • liver problems that can lead to the need for liver transplant, or death. Tell your doctor right away if you get any of these symptoms of a liver problem:
    • nausea
    • upper right stomach-area (abdomen) pain
    • poor appetite
    • yellowing of your skin or eyes (jaundice)
    • tiredness
    • dark (tea-colored) urine
    • vomiting
    • pale or light colored stools
      Your doctor should do a blood test to check you for liver problems before you take Lamisil Tablets.
  • change in taste or loss of taste may happen with Lamisil Tablets and can be severe. This may improve within several weeks after you stop taking Lamisil Tablets, but may last for a long time or may become permanent. Tell your doctor if you have:
    • change in taste or loss of taste
    • poor appetite
    • unwanted weight loss
    • change in mood or depressive symptoms
  • change in smell or loss of smell may happen with Lamisil Tablets. This may improve after you stop taking Lamisil Tablets, but may last for a long time or may become permanent.
  • depressive symptoms. Tell your doctor right away if you have any of these signs or symptoms:
    • feel sad or worthless
    • change in sleep pattern
    • loss of energy or interest in daily activities
    • restlessness
    • mood changes
  • low white blood cell count. People taking Lamisil Tablets may have a decrease in white blood cells, especially neutrophills. You may have a higher risk of getting an infection when your white blood cell count is low.
  • serious skin or allergic reactions. Tell your doctor right away or get emergency help if you get any of these symptoms:
    • skin rash, hives, sores in your mouth, or your skin blisters and peels
    • swelling of your face, eyes, lips, tongue or throat, trouble swallowing or breathing
    • drug reaction with eosinophilia and systemic symptoms (DRESS) syndrome – skin rash, fever, swollen lymph glands, involvement of internal organs
  • new or worsening lupus (an autoimmune disease). Stop taking Lamisil Tablets and tell your doctor if you get any of the following:
    • progressive skin rash that is scaly, red, shows scarring, or loss of pigment
    • unusual sensitivity to the sun that can lead to a rash

The most common side effects of Lamisil Tablets include:

  • headache
  • itching
  • diarrhea
  • change in taste
  • rash
  • nausea
  • upset stomach
  • stomach-area (abdomen) pain
  • abnormal liver function tests
  • gas

Tell your doctor if you have any side effect that bothers you or that does not go away.

These are not all of the possible side effects of Lamisil Tablets. For information, ask your doctor or pharmacist.

Call your doctor for medical advice about side effects. You may report side effects to FDA at 1800-FDA-1088.

How should I store Lamisil Tablets?

  • Store Lamisil Tablets below 77°F (25°C)
  • Keep Lamisil Tablets in a tightly closed container and keep out of the light.

Keep Lamisil Tablets and all medicines out of the reach of children.

General information about the safe and effective use of Lamisil Tablets.

Medicines are sometimes prescribed for purposes other than those listed in Patient Information. Do not use Lamisil Tablets for a condition for which it was not prescribed. Do not give Lamisil Tablets to other people, even if they have the same symptoms that you have. It may harm them.

You can ask your pharmacist or doctor for information about Lamisil Tablets that is written for health professionals.

What are the ingredients in Lamisil Tablets?

Active ingredient: terabinafine hydrochloride

Inactive ingredients: colloidal silicon dioxide, hydroxypropyl methylcellulose, magnesium stearate, microcrystalline cellulose, sodium starch glycolate

This Patient Information has been approved by the U.S. Food and Drug Administration.

Last reviewed on RxList: 7/3/2013
This monograph has been modified to include the generic and brand name in many instances.

Lamisil - User Reviews

Lamisil User Reviews

Now you can gain knowledge and insight about a drug treatment with Patient Discussions.

Here is a collection of user reviews for the medication Lamisil sorted by most helpful. Patient Discussions FAQs

Report Problems to the Food and Drug Administration


You are encouraged to report negative side effects of prescription drugs to the FDA. Visit the FDA MedWatch website or call 1-800-FDA-1088.

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