Indications
- Terbinafine is used to treat specific fungal infections, such as those affecting fingernails or toenails.
- It functions by halting the growth of the fungus.
- Terbinafine falls under the category of antifungal drugs.
Dosage and administration
- Read the Medication Guide from the pharmacist before starting terbinafine and each refill; ask questions if needed.
- Take terbinafine orally as directed by the doctor, with or without food, usually once a day.
- Dosage and treatment duration depends on a medical condition and response.
- Full benefits may take months after treatment completion as healthy nails replace infected ones.
- Complete the full prescribed amount even if symptoms improve early; stopping early may lead to a recurrence of the infection.
Side effects
- Possible side effects of terbinafine include diarrhea or stomach upset.
- If these effects persist or worsen, inform your doctor or pharmacist promptly.
- The medication is prescribed because the benefits outweigh the risk of side effects for most people.
- Changes in taste/smell may occur; if persistent, report to the doctor immediately.
- Notify your doctor promptly about serious side effects like vision changes, mood changes, unexplained bleeding, unusual tiredness, or signs of kidney problems.
- Terbinafine may rarely cause serious liver disease; seek immediate medical help if you experience symptoms such as nausea, loss of appetite, severe abdominal pain, or yellowing of eyes/skin.
- A severe allergic reaction to the drug is rare but requires immediate medical attention, with symptoms like fever, swollen lymph nodes, rash, swelling of face/tongue/throat, severe dizziness, or difficulty breathing.
- The provided information does not cover all possible side effects; contact your doctor or pharmacist for any unlisted effects.
Precautions
- Inform your doctor or pharmacist about any allergies to terbinafine or other substances, as the product may contain inactive ingredients that can cause allergic reactions.
- Discuss your medical history with your doctor, particularly if you have immune system problems, kidney disease, liver disease, or lupus.
- Limit alcohol intake, as daily alcohol use may increase the risk of serious side effects.
- Be cautious in the sun; limit sun exposure, avoid tanning booths, use sunscreen, and wear protective clothing. Report sunburn or skin issues to your doctor.
- Prior to surgery, disclose all products you use, including prescriptions, non-prescription, and herbal items.
- During pregnancy, use terbinafine only when necessary, and discuss risks and benefits with your doctor. Fungal nail infection treatment can often be postponed until after childbirth.
- Terbinafine passes into breast milk; consult your doctor before breastfeeding.