Is weight gain a side effect of lamisil?

Gain Weight? Lamisil is not the reason

Fungal infections are treatable, but many drugs out there come with their set of side effects. Most individuals have a long list of concerns they want to be addressed before taking any drug. Questions such as “is weight gain a side effect of lamisil?” come up as well. Lamisil is a popular drug used to treat fungal infections. It has been favored by many because of its effectiveness; however, there are concerns about whether this drug can cause weight gain or not. In this post, we will explore everything you need to know about Lamisil and its side effects.

Understanding Lamisil

Lamisil is a prescription antifungal medication that is taken orally. It is used to treat toenail or fingernail fungus. Once ingested, Lamisil is absorbed into the bloodstream, where it then targets and kills the fungal cells. The medicine works by inhibiting the growth of the fungal cells. This activity curbs the spread of the fungus, leading to relief from the infection. The drug is safe and can be taken by both adults and children. Individuals with liver or kidney problems may experience side effects, and this may affect their ability to take the drug.

How does Lamisil Work?

Lamisil works by disrupting the growth of fungal cells that cause fungal infections. It contains the active ingredient terbinafine hydrochloride, which fights the fungal cells that cause infection. Notably, Lamisil is taken orally or through the mouth, passing through the digestive system and, eventually, the bloodstream.

Is weight gain a side effect of lamisil?

No, weight gain is not a side effect of Lamisil. There is no scientific evidence that supports the suggestion that Lamisil causes weight gain. While there are side effects associated with taking Lamisil, weight gain is not one of them. Individual physiology and genetics might play a role, including lifestyle factors such as diet, stress, and exercise.

Side Effects of Lamisil

Like most drugs, Lamisil comes with its set of side effects. Some of the side effects of Lamisil include:

  • Stomach upsets, including diarrhea, nausea, and abdominal pain
  • Headaches
  • Loss of taste or metallic taste
  • Visual disturbances, such as blurred vision or visual disturbance
  • Fatigue
  • Uncommon side effects include:
    • Abnormal liver function
    • Skin rash or itching
    • Joint pains or muscle aches
    • Blood disorders

When should I seek medical attention?

If you experience any of these rare conditions, seek medical attention immediately. Call your healthcare provider if you feel like the Lamisil is not effectingivly treating your fungal infection, you develop any of the above symptoms, or if you have questions about any of the side effects associated with Lamisil.

How to Take Lamisil

If you are prescribed Lamisil, take it exactly as directed by your healthcare provider or your pharmacist. Lamisil should be taken with a full glass of water, and it should be taken at the intervals specified by your doctor. Take the medication until your prescription runs out or otherwise specified by your doctor, even if your condition appears to have cleared up. Taking it improperly or for a shorter period of time can lead to reoccurrence and a stronger infection that may become resistant to treatment.

What should I expect?

After starting treatment with Lamisil, you should begin to see some improvement within a few weeks. However, if you do not see any changes or if the symptoms worsen, speak to your healthcare provider.


While there is no clinical evidence that supports the suggestion that Lamisil causes weight gain, it is essential to monitor your health while on medication. Ensure you communicate effectively with your healthcare provider and pharmacist about any concerns or side effects. Always follow the prescribed dosage and take the medication as directed to avoid adverse outcomes.


  • What are the common side effects of Lamisil?
    The common side effects of Lamisil include stomach upsets, including diarrhea, nausea, and abdominal pain, headaches, loss of taste or metallic taste, visual disturbances, such as blurred vision or visual disturbance, and fatigue.
  • Does Lamisil cause weight gain?
    No, weight gain is not a side effect of Lamisil. There is no clinical evidence that supports the suggestion that Lamisil causes weight gain.
  • What if I experience side effects on Lamisil?
    If you experience any side effects, speak to your healthcare provider or pharmacist immediately. In some cases, your healthcare provider may adjust your dosage, switch your medication or recommend changes to your lifestyle or diet.
  • Is Lamisil safe for children?
    Yes, Lamisil is safe for children. However, always consult with your child’s pediatrician first before administering any medication.


  • Nancy, “Lamisil.” Rxlist, 7 Sep. 2021,
  • “Terbinafine: MedlinePlus Drug Information.” MedlinePlus, U.S. National Library of Medicine, 15 Jun. 2021,