Lamisil (Terbinafine) from Maple Leaf Medications.

Lamisil (terbinafine hydrochloride) Indications

Lamisil, generic name terbinafine hydrochloride, is an oral allylamine antifungal medication prescribed for the treatment of toenail or fingernail fungal infection due to tinea unguium or dermatophytes. Terbinafine works by stopping the growth and spread of fungi.

While terbinafine is primarily used to treat fungal infections, this medication has been used for other conditions off-label. However, terbinafine should only be used under the guidance of a healthcare provider.

Lamisil (terbinafine hydrochloride) Uses and Dosage

Prior to taking terbinafine, read the medication guide as it can help you understand how to take or use the medication correctly and safely. If you have any questions or apprehensions regarding the medication, consult with your healthcare provider or pharmacist.

The usual adult dose of terbinafine tablets is 250 mg once daily taken for 6-12 weeks. This medication is swallowed whole with a glass of water and with a meal. Always use terbinafine exactly as directed by your prescriber. Do not change the dose or use this medication longer than recommended.

Lamisil (terbinafine hydrochloride) Side Effects

Some common side effects associated with terbinafine include:

• Stomach upset
• Diarrhea
• Gas
• Nausea
• Headache

Despite being generally safe, taking terbinafine has the potential to cause severe side effects. These side effects necessitate prompt medical attention. Some severe side effects that may occur with terbinafine include:

• Vision changes
• Unexplained bruising or bleeding
• Unusual tiredness
• Change in the amount of urine
• Depression or any mental changes
• Loss of appetite
• Persistent nausea and vomiting
• Severe abdominal pain

Although uncommon, an allergic reaction to terbinafine is possible. Signs of allergic reaction include:

• Skin rash, itching, or hives
• Dizziness
• Swelling of the entire face, lips, or throat
• Difficulty breathing
• Tightness in the chest or throat

Once allergy symptoms develop, discontinue the use of terbinafine and promptly seek medical management. For severe symptoms like breathing difficulties, contact emergency services or visit the nearest emergency room without delay.

Lamisil (terbinafine hydrochloride) Cautions

Discuss your medical history with your healthcare provider. Terbinafine may not be suitable for everyone. Individuals with the following conditions should avoid taking this medication:

• A history of liver disease or liver problems
• Immune system problems
• Renal impairment
• Lupus
• Children under 12 years of age

Terbinafine has the potential to interact with some prescription, over-the-counter, and herbal medications. Some of the products that can cause interactions with terbinafine include:

• Warfarin
• Rifampin
• Antidepressants
• Beta-blockers

Alcohol consumption should be avoided while taking terbinafine because it can increase the risk of liver damage.

Lamisil may harm the developing fetus or pass into breast milk and affect the nursing infant. If you are conceiving or breastfeeding, you should avoid taking Lamisil.

Lamisil (terbinafine hydrochloride) Form and Strength

This medication is available in the following forms:

• Lamisil tablet
  • 250 mg
• Terbinafine tablet
  • 250 mg

FAQ

How long should Lamisil be used?

Lamisil is usually taken for several weeks to several months, depending on the location and extent of the infection. For toenail fungal infections the treatment may last for 12 weeks.

Does Lamisil stop itching?

Yes, Lamisil can help to alleviate itching caused by fungal infections of the skin.

Resources

1. https://www.accessdata.fda.gov/drugsatfda_docs/label/2019/020539s033lbl.pdf
2. https://www.drugs.com/lamisil.html
3. https://www.webmd.com/drugs/2/drug-12422/lamisil-oral/details
4. https://www.rxlist.com/lamisil-drug.htm#description