How does terbinafine work?
Terbinafine blocks an enzyme needed for fungal growth, preventing fungi from multiplying and allowing the body to clear the infection.
What is terbinafine used to treat?
Terbinafine is commonly prescribed for:
- Fungal nail infections (onychomycosis)
- Athlete’s foot (tinea pedis)
- Ringworm (tinea corporis)
- Jock itch (tinea cruris)
- Fungal infections of the scalp
Who can take terbinafine?
Terbinafine is suitable for most adults and children over 12 years old, depending on the condition being treated.
Who might not be able to take terbinafine?
Terbinafine may not be suitable if you:
- Have liver disease
- Have kidney disease
- Have had an allergic reaction to terbinafine or similar antifungal medications
- Are pregnant or breastfeeding (your doctor will assess if it’s safe for you)
Can I take terbinafine if I’m pregnant or breastfeeding?
Terbinafine isn’t usually recommended during pregnancy or while breastfeeding, as its safety in these cases is not well studied.
What if I miss a dose?
If you forget a dose, take it as soon as you remember. If it’s close to your next dose, skip the missed one—do not take two doses at once.
How effective is terbinafine?
Terbinafine is highly effective at treating fungal infections, but it may take weeks to months for the infection to fully clear, especially for nail infections.
What should I do if I take too much?
Taking too much terbinafine can cause nausea, stomach pain, dizziness, or liver problems. If you think you’ve taken too much, seek medical help immediately.
What dose of terbinafine is usually taken?
- For nail infections: 250mg once daily for 6 to 12 weeks
- For skin infections: 250mg once daily for 2 to 6 weeks
- For topical use (cream or gel): Applied once or twice daily for one to two weeks
Your doctor will determine the most suitable dose based on your condition.
What are the side effects of terbinafine?
Common side effects include:
- Headache
- Nausea or diarrhoea
- Skin rash or itching
- Loss of taste or appetite (rare but possible)
Serious side effects, such as liver problems (jaundice, dark urine, severe fatigue), require urgent medical attention.
How should I take terbinafine?
Terbinafine is taken as tablets, cream, gel, or spray, depending on the type of infection being treated.
When should terbinafine be taken?
Terbinafine tablets should be taken at the same time each day, with or without food.
What are the brand names for terbinafine?
Terbinafine is available as a generic medicine, but some branded versions include:
- Lamisil
- Terbinex
Final thoughts
Terbinafine is an effective antifungal medication for treating skin and nail infections. To get the best results, take it as prescribed, continue treatment for the full course, and practice good hygiene to prevent reinfection. If you experience side effects, speak to your doctor or pharmacist.
