Nail fungus is a common and stubborn infection, but you can get rid of it with the right approach. The key is using an antifungal treatment consistently for several months, keeping the nail short and dry, and being patient. Most cases need daily treatment for 6 to 12 months before a clear nail grows in, and recurrence is common.
What Causes Nail Fungus and Why Is It So Hard to Treat?
Fungal nail infections are usually caused by dermatophytes, which are fungi that feed on keratin. Keratin is the protein that makes up your nails, skin, and hair. The fungus thrives in warm, moist environments, which is why public pools, gym showers, and sweaty shoes are common places to pick it up.
The infection often starts as a white or yellow spot under the tip of the nail. As the fungus spreads deeper, it can cause the nail to discolor, thicken, and crumble at the edge. The nail may also separate from the nail bed, which is a condition called onycholysis.
Treatment is slow because the fungus lives under the nail plate, where topical creams have trouble reaching. The nail itself grows very slowly. A fingernail takes about 6 months to fully regrow, while a toenail can take 12 to 18 months. The medication only protects new nail growth as it emerges, so you are waiting for the infected nail to grow out completely.
How To Get Rid Of A Nail Fungus: Start With Over-the-Counter Options
For mild cases that only affect a small area of the nail, over-the-counter antifungal treatments are a reasonable first step. These products usually contain ingredients like clotrimazole, miconazole, or undecylenic acid. They come as creams, ointments, or medicated nail polishes.
Before applying any topical treatment, file down the thickened parts of the nail. This is not optional. Thick nail material blocks the medication from reaching the fungus underneath. Use a disposable file or clean your file with alcohol after each use to avoid spreading fungal spores. Thinning the nail also reduces pressure and pain in some cases.
Apply the topical treatment to the entire nail surface and just under the free edge of the nail. Follow the product instructions exactly. Most require daily application for several months. If you see no improvement after 3 months of consistent use, topical treatment alone is unlikely to clear the infection.
When You Need a Prescription Treatment
If the infection covers more than half of the nail, involves multiple nails, or has not responded to over-the-counter products, prescription medication is usually the more effective route. Oral antifungal drugs such as terbinafine are the standard treatment for moderate to severe cases.
Terbinafine is taken once daily for 6 weeks for fingernail infections and 12 weeks for toenail infections. It works by stopping the fungus from producing ergosterol, a compound the fungal cell membrane needs to survive. Without it, the fungus dies and new healthy nail can grow.
Oral antifungals require a prescription and a doctor’s oversight. Liver function tests are often recommended before and during treatment because these medications are processed by the liver. Side effects can include gastrointestinal upset, skin rash, and changes in taste. These are uncommon but worth discussing with your doctor.
Your doctor may also consider a medicated nail lacquer called ciclopirox. This is a prescription topical that you brush onto the nail like polish. It is less effective than oral medication but has fewer risks. Some doctors combine oral and topical treatments, though evidence that this improves outcomes is limited.
Newer and Alternative Treatment Options
Laser treatments for nail fungus have grown in popularity over the past decade. These devices use heat to damage the fungus in the nail bed. The FDA has cleared several lasers for this purpose, but clearance is not the same as proof of cure.
Clinical studies on laser therapy show mixed results. Some patients improve, but cure rates are lower than with oral terbinafine. Lasers are also expensive, and most insurance plans do not cover them. If you are considering laser treatment, ask the provider for their success rates and be honest with yourself about the cost versus the likelihood of a cure.
Some research has explored natural remedies like tea tree oil and garlic extract. These have antifungal properties in laboratory settings, but no large human trials have confirmed they can cure a nail infection. They may help prevent infection or support treatment, but relying on them alone will likely leave you disappointed.
Daily Habits That Make Treatment More Effective
Your daily routine can determine whether treatment works. Fungi need moisture to survive, so keeping your feet dry is critical. After bathing, dry your feet thoroughly, especially between the toes. Use a separate towel for your feet or wash your towel frequently.
Wear breathable socks made of moisture-wicking materials like merino wool or synthetic blends. Change your socks if they become damp. Alternate between two pairs of shoes so each pair has time to dry out completely. Consider using an antifungal powder inside your shoes.
Keep your nails trimmed straight across and file down any thickened areas regularly. This reduces the fungal load and helps topical treatments penetrate better. Dispose of any nail clippings carefully, as they contain live fungal spores that can reinfect you or spread to others.
Do not share nail clippers, files, towels, or shoes with anyone else. Fungal spores can survive on surfaces for months. If you visit a nail salon, bring your own tools or confirm the salon sterilizes equipment between clients.
Why Nail Fungus Keeps Coming Back
Recurrence is the most frustrating part of nail fungus. Studies suggest that up to a quarter of people who successfully clear an infection will see it return within a few years. This happens for several reasons.
The fungus may not be fully eradicated even when the nail looks clear. Some fungal spores can remain dormant in the nail bed. Additionally, the damaged nail plate provides a place for fungus to hide, and many people stop treatment as soon as the nail looks better rather than completing the full course.
Certain health conditions increase your risk of recurrence. Diabetes, poor circulation, and a weakened immune system all make it harder for your body to fight off fungal infections. People who have had athlete’s foot are also more likely to develop nail fungus because the same fungi cause both conditions.
If you have recurrent infections, treating athlete’s foot at the same time is essential. The skin between your toes can harbor fungus that spreads back to the nail. Using an antifungal foot powder as a preventive measure may help, though evidence for this specific practice is limited.
When To See a Doctor
You should see a doctor if you have diabetes, if the infection is painful, or if you see signs of a bacterial infection such as redness, swelling, or drainage. People with diabetes need special care because even minor foot infections can escalate into serious complications.
See a doctor if the nail is very thick, if multiple nails are affected, or if you have tried over-the-counter treatments for several months without improvement. A doctor can confirm the diagnosis and rule out other conditions that look like nail fungus.
Not every discolored or thickened nail is fungal. Psoriasis can affect the nails and look similar. Injury to the nail can also cause discoloration. A simple lab test called a KOH prep can confirm whether fungus is present. Your doctor scrapes a bit of nail material and examines it under a microscope. This is worth doing before starting months of treatment for a condition you may not actually have.
How To Prevent Nail Fungus in the First Place
Prevention is more effective than treatment. Keep your feet clean and dry. Wear shower shoes in public locker rooms and pool areas. These floors harbor fungi that easily transfer to your feet.
Choose shoes that fit well and allow airflow. Tight shoes trap moisture and create the exact environment fungi need to thrive. Rotate your shoes so each pair has at least 24 hours to dry out between wears.
If you have athlete’s foot, treat it promptly. The fungus that causes athlete’s foot can migrate to your nails if left untreated. Check your feet regularly, especially if you spend time in communal showers or have a family member with a fungal infection.
Frequently Asked Questions
How long does it take to get rid of nail fungus?
Most treatments take 6 to 12 months to produce a clear nail. Toenails grow slower than fingernails, so they take longer to show visible improvement.
Does vinegar kill nail fungus?
Vinegar has mild antifungal properties in laboratory settings, but no clinical evidence confirms it can cure a nail infection. It is not a reliable treatment on its own.
Can nail fungus spread to other parts of the body?
Yes, the same fungus can spread to other nails, the skin between your toes, and your groin area. Treating athlete’s foot at the same time reduces the risk of the fungus spreading back to your nails.
Is nail fungus a sign of a serious health problem?
In healthy people, nail fungus is usually not serious. However, it can be a warning sign for people with diabetes, poor circulation, or a weakened immune system, and these individuals should see a doctor promptly.

