What Is Lamisil?

Lamisil is available in tablet form for oral administration and topical form for  local application.

Manufactured By – Novartis Pharmaceuticals

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Uses Of Lamisil

Lamisil is used to treat external fungal infections like ringworm, pityriasis versicolor, athlete’s foot, jock itch and nail infections.

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Lamisil Composition

Lamisil contains “Terbinafine hydrochloride” as its active ingredient which is a potent anti-fungal agent.

How Does Lamisil Work?

Lamisil acts by inhibiting squalene epoxidase enzyme in fungi which is required for the synthesis of its cell membrane. Thus, due to lack of cell membrane formation, fungal cells start to die.

How to Take Lamisil?

  • Lamisil, when administered in tablet form, can be taken orally with or without food. The tablet can be swallowed as a whole without chewing or crushing it.
  • Lamisil can also be applied to the skin in its cream or ointment form for topical application

Common Dosage Of Lamisil

  • Fingernail onychomycosis : one 250 tablet once a day for 6 weeks
  • Toenail onychomycosis : one 250mg tablet once a day for 12 weeks
  • Ringworm infection and athlete’s foot: apply the cream to the affected area once daily for at least 1 week not to exceed 4 weeks.
  • It may take few weeks to few months following completion of the treatment for achieving the full benefit of this drug as it may take a long time for infected nail to be replaced by a new nail.

When to Avoid Lamisil & Precautions To Take?

  • Do not use Lamisil if you are allergic to any of it’s ingredients.
  • Avoid using Lamisil if you have any liver diseases because of the hepatotoxic effect of Lamisil.
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Side Effects Of Lamisil

Common side effects of Lamisil include-

  • Diarrhea
  • Indigestion
  • Headache
  • Dizziness
  • Nausea
  • Vomiting
  • Dark colored urine
  • Yellow coloration of skin and eyes
  • Skin irritation at local site of application
  • Taste disturbances
  • Visual disturbances
  • Smell disturbances
  • Skin rashes

What Are The Effects of Lamisil on Organs?

  • Lamisil may decrease blood cell count (absolute lymphocyte count)
  • Lamisil may have an adverse effect on liver and kidney function.
  • Taste and smell disturbance has been reported with oral administration of Lamisil. These disturbances may get resolved following discontinuation of treatment or may remain for prolonged periods.

Are There Any Reported Allergic Reactions?

  • Allergic reactions to Lamisil have been reported.
  • Symptoms include difficulty in breathing, severe skin rashes, swelling of the face, throat and tongue etc. Seek immediate medical attention in such cases.

Drug Interactions to be careful about?

Lamisil may intact with the following drugs –

  • Codeine
  • Cimetidine
  • Cyclosporine
  • Rifampicin
  • Caffeine
  • Desipramine
  • Fluconazole
  • Estradiol valerate

Shows Effects/Results In

Onset of action can be seen within 1-2 hours of administration. However, it may take a few weeks to few months for the medicine to show its complete effect following oral administration.

Storage Requirements for Lamisil

  • Store at room temperature away from heat and direct sunlight.
  • Keep away from the reach of children and pets.

Pro Tips When Taking Lamisil

  • Avoid long term usage of Lamisil as it may lead to disturbance in taste and smell which may be irreversible in few cases.
  • Patients with a pre-existing liver disease should use Lamisil with caution due to hepatotoxic nature of the medicine.


Is Lamisil addictive?

No, Lamisil is not addictive.

Can I have Lamisil with alcohol?

Administartion of alcohol along with Lamisil may lead to increased chances of hepatic (liver) adverse reactions thus avoid the use of alcohol.

Any particular food item to be avoided?


Can I have Lamisil when pregnant?

Avoid unless absolutely necessary as there are no adequate and well controlled studies in pregnant women regarding the use of Lamisil.

Can I have Lamisil when feeding a baby?

Feeding of a baby is not recommended while on Lamisil therapy as Lamisil is excreted in breast milk and may have adverse effects on the baby.

Can I drive after taking Lamisil?

Yes, it is okay to drive after taking Lamisil.

What happens if I overdose on Lamisil?

Contact your doctor in case of overdosing. Symptoms of overdosing include nausea, headache and vomiting, abdominal pain and dizziness.

What happens if I eat expired Lamisil?

No major side effect is seen upon consumption of a single dose of expired Lamisil. However, if you notice any severe side effects, immediately inform your doctor.

What happens if I miss a dose of Lamisil?

Take the missed dose as soon as you remember. If it’s almost time for your next dose, skip the missed dose.

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