Efinaconazole Toenail Cure

Before committing to a long toenail treatment, ask how the diagnosis was confirmed. AAD¹ guidance describes clipping or scraping a nail sample for examination: nail psoriasis and injury can resemble fungus. The treatment plan depends on your health, medicines, how much nail is affected and which fungus is present.¹

Who entered?

Dow-sponsored trials tested daily 10% efinaconazole solution versus vehicle for 48 weeks, assessing week-52 cure. Eligibility: ages 18–70, 20–50% target-toenail involvement, sparing its growth region.²

What cleared?

Complete cure required a clear target nail plus negative fungal culture and potassium-hydroxide microscopy. FDA² results, solution versus vehicle:²

Trial	Complete cure
First	117/656 (17.8%) versus 7/214 (3.3%)
Second	88/580 (15.2%) versus 11/201 (5.5%)

Both favored solution (P < .001). Negative fungal tests alone: 55.2% versus 16.8% and 53.4% versus 16.9%. No oral-drug comparison was made.²

Who was counted?

1,655 were randomized; four never-dispensed participants were excluded. 13–21% had incomplete week-52 measurements; earlier measurements substituted for missing ones.²

Before prescribing?

The current US Jublia label covers toenail fungus from age six; these controlled trials enrolled adults.³

The label specifies once-daily application for 48 weeks to clean, dry affected toenails and surrounding skin, including beneath the nail tip. Wait at least 10 minutes after washing or bathing. Ask for an applicator demonstration.³

Report persistent redness, itching, swelling, blistering or pain at the application site. Ingrown toenails and local irritation are recognized adverse reactions. The solution is flammable; keep it away from heat and flame. It is for toenails and adjacent skin, not the mouth, eyes or vagina.³

Discuss pregnancy or breastfeeding before use: human pregnancy data are unavailable, and passage into human milk is unknown. Nail polish, gel and acrylic products have not been evaluated for their effect on treatment efficacy; ask before covering the treated nail.³

If applying a medicine daily for months becomes difficult, tell your dermatologist. AAD¹ advises continuing for the prescribed course even when symptoms improve. Ask when the nail will be examined again, what change should be expected and whether another sample is needed to assess the infection.¹

The Skin Log described in “Twelve Weeks” in Skin, Head to Toe records dated photographs, product start dates and irritation. Adapt that record to your clinician’s nail-treatment timetable; the book’s acne review interval does not replace a 48-week prescription course.