How to Treat Toenail Fungus - Derm Recommends

Key points: what causes toenail fungus & who’s at higher risk

• Toenail fungus is common because fungi are widespread in the environment.
• You’re more likely to pick it up when walking barefoot, especially in public showers/communal wet areas.
• Fungus tends to thrive under the nail because it’s cooler and the immune system is less active there.
• Diabetes and weakened immune systems increase risk and make treatment more important (to protect the skin barrier and reduce infection risk).

Treatment approaches (clinic + at-home)

1) Prescription topical nail therapies (applied directly to the nail)

Ciclopirox (Penlac)

• Described as having poor effectiveness and increasing resistance.
• If used, results take a long time—about 18 months for thick/discolored nails to fully grow out.
• Requires consistent daily/near-daily use for 1–2 years.
• Application concept: paint onto the nail and get medicine under the nail edge for better penetration.

Efinaconazole (Jublia)

• Reported to have better data than ciclopirox, but clearance is still limited (about 30–40% in the reported timeframe).
• Requires daily use for months; missing doses slows progress.

10% terbinafine solution (compounded)

• A cost-effective option compared with some newer branded topicals (insurance may label these as “cosmetic”).
• Use consistently: paint on the nail and drip/coat under the nail edge every night for about 1 year.

2) Oral antifungal medications (higher success, more systemic risk)

• Oral options work from inside the body (fungus-killing comes through skin/sweat).
• Bigger caution: possible liver side effects, especially if:
  • taking statins
  • using more alcohol
  • having history of hepatitis/cirrhosis

Fluconazole

• Can help toenail fungus, but treatment is long (months) because nails grow slowly.

Itraconazole

• Described as more potent and with less resistance than fluconazole.
• Higher liver risk—requires doctor evaluation.

Terbinafine (Lamisil)

• Often preferred in patients on statins due to lower interaction risk (per the speaker).
• Standard monitoring: check liver enzymes, including monthly liver checks during long courses.
• Pulse dose therapy (alternative to daily dosing):
  • Take terbinafine 7 days per month
  • Take the rest of the month off
  • Repeat monthly cycles
  • Claimed to be almost as effective as daily dosing with less liver risk

3) Combining treatments for better clearance

• For motivated patients, using both oral + topical therapy may improve clearance rates and help maintain adherence.

4) Procedural/clinic options

Laser therapy

• Some lasers may help kill fungus, but described as often cash-pay (insurance typically doesn’t cover).

CO₂ laser technique

• Not primarily to “kill fungus,” but to drill holes in the nail so topicals can penetrate better.
• May help nails clear faster, especially when thickened.

Nail removal (last resort)

• Numb toe → physically remove the nail.
• While the nail regrows, use topical antifungals, and sometimes oral antifungals as well.

At-home/self-care strategies (limited evidence, supportive measures)

• Tea tree oil

  • Suggested only if diluted (avoid full-strength 100% due to irritation).
  • May help over time if fungus is not severe; not reliable for thick cases (speaker note).

• Vicks VapoRub (camphor/menthol)

  • Anecdotally may have antifungal properties.
  • Apply at night, and wear socks afterward.

• Footwear & hygiene basics

  • Use breathable footwear
  • Keep feet clean and dry
  • Consider breathable socks and avoid letting feet stay damp for long periods

Prevention: best strategy is avoiding infection

• Wear sandals in public showers; avoid walking barefoot in communal areas.
• Clean feet after/washing in the shower.
• If you have diabetes/prediabetes, better metabolic control (diet/exercise) can help reduce risk of toenail fungus.

Presenters / sources

• Presenter: A board-certified dermatologist (name not provided in the subtitles)
• Medication brands/names referenced: Penlac (ciclopirox), Jublia (efinaconazole), Lamisil (terbinafine), Vicks VapoRub
• Techniques/devices referenced: CO₂ laser; laser therapy (cash-pay in general)