Treatments
How long does fungal nail treatment take?
There are two clocks running. One is how long it takes to deal with the infected nail. The other, much slower, is how long a healthy nail takes to grow into its place.
Summary
Removing infected nail with a 40% urea set usually takes two to four weeks of daily application. Medicated lacquers run for six to twelve months. Oral terbinafine is typically six weeks for fingernails and twelve for toenails. In every case the cosmetic result depends on regrowth, not on the treatment finishing.
Nail growth rates
Growth is the rate-limiting step and it cannot be hurried.
- Fingernails: roughly 3mm per month — full replacement in 4–6 months
- Toenails: roughly 1mm per month — full replacement in 9–12 months
- Big toenails and older adults: slower still
What affects the timeline
Extent of the nail involved, thickness, whether the matrix at the base is infected, your age and circulation, and above all consistency. Missed days are the most common reason treatment overruns.
When to seek medical advice
If there is no visible change after four weeks of correct topical use, or if the infection reaches the cuticle, ask a GP or podiatrist whether oral treatment is appropriate.
Frequently asked questions
Why does my nail still look bad after treatment?
Because the damaged section has to grow out. The proof of success is the new nail emerging clear from the cuticle.
Can I speed regrowth up?
Not meaningfully. Good circulation, adequate protein and avoiding further trauma help; nothing accelerates nail growth substantially.
References
People also read
Medical disclaimer. This article is general information written for a UK audience. It is not medical advice and does not replace assessment by a GP, pharmacist or podiatrist. Always read the patient information leaflet supplied with any product before use.