Toenail fungus treatment: what actually works

Published August 1, 2026 · Updated September 15, 2026

The full comparison

Fungal nail infection — onychomycosis, or tinea unguium — happens when fungi that thrive in warm, damp conditions get under the nail and colonise the nail bed. Signs include yellow or brown discolouration, thickening, a crumbly edge, white patches, lifting from the nail bed and sometimes a faint smell. The fungus sits beneath a hard, dense nail plate, which is why so many treatments struggle to reach it. Here is the full range of options, side by side.

Over-the-counter creams and lacquers

Cheap, easy to buy, and genuinely useful for very mild, surface-level cases caught early. The limitation is physical: most of what you paint on top of the nail never reaches the nail bed underneath, where the infection actually lives. Thick or long-standing infections often show little change after months of faithful daily application.

Read the full guide to antifungal creams for nail fungus

Prescription lacquers

Stronger nail lacquers, prescribed by a doctor, are formulated to penetrate the nail plate better than shop-bought options. The trade-off is effort: daily application for six to twelve months, weekly filing of the nail, and clearance rates that remain modest even with perfect use — especially on nails that are already thick.

Oral antifungal tablets

Terbinafine and itraconazole take the opposite route: instead of crossing the nail from outside, the medicine reaches the nail bed through your bloodstream. That is why they clear infections many topicals cannot, and why they remain the standard medical route for stubborn or severe cases.

The cost is a prescription, a course of several months, possible interactions with other medication, and liver-function monitoring for some patients. If your infection is severe, painful or spreading, this is the conversation to have with your doctor — a device or a cream is not a substitute for it.

Read the full guide to terbinafine (Lamisil) for toenail fungus

In-clinic laser

Podiatry clinics use professional laser equipment, supervised by a clinician. It is the strongest light-based option — and priced accordingly. Courses typically run $500 to $1,500, and because insurers usually treat nail fungus as cosmetic, that money comes out of your pocket. It also means appointments, travel and sometimes repeat courses when the first does not finish the job.

What laser toenail fungus treatment actually costs

At-home light therapy

At-home light devices such as FungaBeam use the same broad principle as clinic laser — light rather than drugs — at consumer power and a consumer price. FungaBeam surrounds the nail with 18 LEDs in two wavelengths: 470nm visible blue for the surface, and 910nm near-infrared, which travels further into the tissue beneath the plate. No prescription, no appointment, nothing applied to the skin.

It asks one thing of you: consistency. About 90 seconds a day, for months rather than days. If you will actually keep that up, it is the lowest-friction option on this list — a one-off purchase with nothing to refill.

How light therapy devices compare — and what separates a real one from a cheap clip-on

Nail removal

For severe, painful cases where the nail is badly damaged or causing ongoing discomfort, a podiatrist may remove the nail partially or fully so the new nail can grow in clean. It is a last resort, not a first step, and it is a decision to make with a clinician rather than at home.

Which treatment for which nail?

• Mild, early discolouration — a small white or yellow patch at the tip or side, nail still thin: an over-the-counter cream or at-home light therapy are both reasonable. Start now; early cases clear fastest.
• Moderate — yellowing or thickening across part of the nail, months or years old, creams already tried: at-home light therapy or a prescription lacquer fits best. Light therapy reaches the layer creams could not, without a prescription.
• Severe — nail heavily thickened, crumbling, lifting, or several nails involved: oral prescription tablets or professional care is the realistic route, and a cream or device is not a substitute.
• Any severity with diabetes, poor circulation or pain — doctor first, always.

The full guide to matching the treatment to your nail

When to see a doctor

See a doctor or podiatrist if you have diabetes, poor circulation or a weakened immune system, if the nail is painful, if the surrounding skin is red, swollen or leaking, if the infection is spreading, if the nail lifted after an injury, or if a dark streak runs lengthways through the nail. Those situations are managed differently and need supervision — no home option, including FungaBeam, is a substitute for that.

To stop an infection coming back once it clears: rotate shoes and let each pair dry fully for 24 hours, wear flip-flops in shared showers and pool areas, treat athlete's foot promptly since it is the usual source, keep nails short and dry, never share clippers, and replace the socks and shoes worn through the worst of it.

The week-by-week timeline

Whatever you choose, judge it by new growth at the base of the nail — not by the old, already-damaged nail at the tip. Toenails grow roughly 1mm a month, so a big toenail needs 9 to 12 months to fully replace itself.

This page is general information, not medical advice. FungaBeam is a consumer wellness device and is not intended to diagnose, treat, cure or prevent any disease. Speak to a doctor or podiatrist about your own situation, particularly if you have diabetes, circulation problems or worsening symptoms.