Lamisil

Lamisil treats athlete's foot, jock itch, ringworm, and fungal infections of the toenails, fingernails, and scalp. It is found over the counter and by prescription.

Lamisil Overview

Updated: 

Lamisil is both an over-the-counter and a prescription medicine used to treat fungal infections. The over-the-counter forms (cream and spray) are used to treat itching, burning, cracking and scaling caused by athlete's foot, jock itch, and ringworm. The prescription forms (tablets and oral granules) are used to treat fingernail and toenail fungal infections and a fungal infection of the scalp that usually occurs in children. 

Lamisil belongs to a group of drugs called antifungals. It works by stopping the growth of fungi.

Lamisil tablets are taken once daily for up to 12 weeks, with or without food. Lamisil oral granules are sprinkled on food and taken by mouth once daily.

Lamisil is found over the counter as a cream and spray. It is applied to the affected area once or twice a day depending on what is being treated. 

Common side effects of Lamisil tablets and granules include headache, diarrhea, and upper respiratory tract infections.

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  • Other
  • Candidiasis, Chronic Mucocutaneous
  • Mycoses
  • Onychomycosis
  • Tinea Capitis
  • Tinea Pedis
  • Tinea Versicolor

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Lamisil Cautionary Labels

precautionsprecautionsprecautionsprecautions

Uses of Lamisil

Lamisilis a prescription antifungal medicine used to treat fungal infections of the fingernails and toenails. The oral granule form is approved to treat tinea capitis (a fungal infection of the scalp hair follicles) in patients 4 years of age and older.

Lamisil is also available as an over-the-counter medication and is used to treat fungal infections (athlete's foot, jock itch, and ringworm).

This medication may be prescribed for other uses. Ask your doctor or pharmacist for more information.

Manufacturer

Lamisil Drug Class

Lamisil is part of the drug class:

Side Effects of Lamisil

The most common side effects of Lamisil tablets include: 

  • headache
  • diarrhea
  • ithcing and rash
  • indigestion
  • liver enzyme abnormalities
  • taste disturbance
  • nausea
  • abdominal pain
  • flatulence (gas)

​The most common side effects of Lamisil oral granules include:

  • headache
  • fever
  • vomiting
  • upper respiratory tract infection
  • abdominal pain
  • nausea
  • itching

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. For information, ask your doctor or pharmacist. 

Call your doctor for medical advice about side effects. You may report side effects to FDA at 1-800-FDA-1088.

Lamisil Interactions

Tell your doctor about all the medicines you take, including prescription and nonprescription medicines, vitamins, and herbal supplements. Lamisil may affect the way other medicines work and other medicines may affect how Lamisil works. 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)

This is not a complete list of Lamisil interactions. Ask your doctor or pharmacist for more information.

Lamisil Precautions

Lamisil may cause serious side effects, including:

  • liver problems that can lead to the need for liver transplant, or death. Your doctor should do a blood test to check you for liver problems before you take Lamisil. Tell your doctor right away if you get any of these symptoms of a liver problem:
    • nausea        
    • upper right stomach (abdominal) pain
    • poor appetite  
    • yellowing of your skin or eyes (jaundice)
    • tiredness
    • dark (tea-colored) urine 
    • vomiting    
    • pale or light colored stools
  • change in taste or loss of taste may happen with Lamisil. This usually improves within several weeks after stopping Lamisil, 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 smell or loss of smell may happen with Lamisil. This may improve after stopping Lamisil, 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 
  • 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
  • new or worsening lupus (autoimmune disease). Stop taking Lamisil and tell your doctor if you experience 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

Do not take Lamisil if you are allergic to Lamisil. 

Lamisil Food Interactions

Medications can interact with certain foods. In some cases, this may be harmful and your doctor may advise you to avoid certain foods. In the case of Lamisil, there are no specific foods that you must exclude from your diet when receiving Lamisil.

 

 

Inform MD

Before you take Lamisil, tell your doctor if you:

  • have or had liver problems
  • have a weakened immune system (immunocompromised)
  • have lupus (an autoimmune disease)
  • have kidney problems
  • have any other medical conditions
  • are pregnant or breastfeeding

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

Lamisil and Pregnancy

Tell your doctor if you are pregnant or plan to become pregnant.

The FDA categorizes medications based on safety for use during pregnancy. Five categories - A, B, C, D, and X, are used to classify the possible risks to an unborn baby when a medication is taken during pregnancy.

Lamisil falls into category B. There are no good studies that have been done in humans with this Lamisil. In animal studies, pregnant animals were given this medication, and the babies did not show any medical issues related to this medication.

Lamisil and Lactation

Tell your doctor if you are breastfeeding or plan to breastfeed. Some Lamisil passes into your milk and may harm your baby. Talk to your doctor about the best way to feed your baby if you take Lamisil.

Lamisil Usage

Take Lamisil exactly as your doctor tells you to take it. 

Lamisil Tablets

  • Lamisil comes as a tablet that you take by mouth.
  • Lamisil is 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 
  • You can take Lamisil with or without food.
  • If you forget to take Lamisil, take your tablets as soon as you remember, unless it is less than 4 hours before your next dose is due.  In this case, wait and take your next dose at the usual time. 

Lamisil Oral Granules

Lamisil comes as oral granules that are sprinkled on food and taken by mouth.

One to two packets should be taken each day with a soft non-acidic food (see instructions below). If two packets are required with each dose, you may either sprinkle the content of both packets on one spoonful of non-acidic food, or sprinkle the contents of both packets on two spoonfuls of non-acidic food as directed below.

  1. Hold packet with cut line on top.
  2. Shake packet gently to settle contents.
  3. Tear packet open along cut line, or use scissors to cut across line.
  4. Carefully pour entire contents of packet onto a spoonful of a soft food, such as pudding or other soft, non-acidic food such as mashed potatoes (do not use applesauce or a fruit-based food). 
  5. Make sure that no granules remain in the packet.
  6. Swallow combination of food and granules without chewing.

Lamisil Cream

  • Between the toes only: apply twice a day (morning and night) for 1 week or as directed by a doctor
  • On the bottom or sides of the foot: apply twice a day (morning and night) for 2 weeks or as directed by a doctor
  • For jock itch and ringworm: apply once a day (morning or night) for 1 week or as directed by a doctor

Lamisil Spray

  • Wash the affected area with soap and water and dry completely before applying 
  • Hold can 4" to 6" from skin. Press and hold to spray a thin layer over affected area; release to stop spray
    • Athlete's Foot between the toes: Spray twice a day (morning and night) for 1 week or as directed by a doctor (Wear well-fitting, ventilated shoes. Change shoes and socks at least once daily)
    • For Jock Itch and ringworm: Spray affected area once a day (morning and night) for 1 week or as directed by a doctor

Lamisil Dosage

Take/Use Lamisil exactly as prescribed by your doctor. Follow the directions on your prescription label carefully.

The dose of Lamisil your doctor prescribes will be determined based on the type of fungal infection you have and other medical conditions you have. The dose is also dependent upon weight (when choosing a dose for children) and other medications you are taking.

Tablets/Oral Granules

  • Lamisil Dosage for Fingernail Fungus Infection - 250 mg once daily for six weeks
  • Lamisil Dosage for Toenail Fungus Infection - 250 mg once daily for 12 weeks
  • Lamisil Dosage for Ringworm of the Scalp - Oral Granule dosage based on child's weight. Usually taken for 6 weeks.

Cream

  • Athlete's Foot (On the bottom or sides of the foot): Apply twice a day (morning and night) for 2 weeks or as directed by a doctor
  • Jock itch and ringworm: Apply once a day (morning or night) for 1 week or as directed by a doctor

Spray

  • Athlete's Foot between the toes: Spray twice a day (morning and night) for 1 week or as directed by a doctor (Wear well-fitting, ventilated shoes. Change shoes and socks at least once daily)
  • For Jock Itch and ringworm: Spray affected area once a day (morning and night) for 1 week or as directed by a doctor

Lamisil Overdose

If you take too much or use too much Lamisil, call your healthcare provider or local Poison Control Center, or seek emergency medical attention right away.

 

Other Requirements

  • Store Lamisil at a temperature.
  • Keep Lamisil in a tightly closed container and away from light.
  • Keep Lamisil and all medicines out of the reach of children.