How to take terbinafine
When you are prescribed terbinafine tablets, you should have your liver function checked.
Ensure you have read the enclosed leaflet carefully before using terbinafine.
The dose is one tablet, to be taken daily at around the same time and either before or after food.
It can take quite a long time for terbinafine to have a visible effect on your nail infection, so it’s important to be patient and take the tablets as prescribed. For toenail infections, it usually takes between three and six months of terbinafine treatment to treat the fungal infection. For fingernail infections, a six-week course of terbinafine is usually sufficient. However, it will take several months after that for the nail to show improvement as it continues to grow out.
Is terbinafine suitable for me?
As is common with all medical treatments, there are some situations where terbinafine tablets should be used cautiously, or they may not be recommended at all. For example, in people who have liver or kidney problems, and people who are allergic to any of the active or inactive ingredients.
During your consultation, tell the online doctor if you are taking any other medicines – this is hugely important and doesn't matter whether they're prescribed by your doctor or purchased from a pharmacy. Terbinafine can cause problems if taken with certain other medicines, including cimetidine, rifampicin, some types of antidepressants (tricyclic antidepressants), and ciclosporin.
You should not use terbinafine tablets if you are pregnant or think you might be pregnant, or are breastfeeding or planning to breastfeed.
Give the doctor as much detail about your general health as possible in the consultation, to make sure they have all the information required to assess the suitability of terbinafine for you.
What are the side effects of terbinafine?
Terbinafine can cause side effects. However, it is worth noting that not everyone experiences them.
Side effects that are considered to be common include a decreased appetite, stomach pain, diarrhoea, indigestion, nausea, headache, skin rash or itching, and muscle aches or pains. Other less common side effects can include taste disturbances, and a general feeling of malaise. Rarely, terbinafine can cause liver toxicity. If you experience any side effects that are persistent or troublesome, you should stop taking terbinafine tablets and talk to your doctor.
Please read the patient information leaflet provided in the pack before starting any course of treatment. The leaflet can also be viewed online here.