amorolfine hydrochloride: clinical use

Prescribing considerations

• Confirm that the presentation is compatible with onychomycosis and reconsider the diagnosis if the appearance is atypical or response is inadequate.
• Assess the extent of nail involvement and whether topical treatment is appropriate; severe, spreading or painful disease warrants clinical review.
• Address coexisting tinea pedis separately.
• Children should not receive the selected product because clinical experience is lacking.

Contraindications and cautions

• Hypersensitivity to amorolfine or any formulation excipient.

Monitoring

• Review clinical progress by assessing healthy nail growth and the extent of affected nail.
• Reassess diagnosis, application technique and treatment suitability if infection progresses or fails to improve.
• Routine systemic laboratory monitoring is not specified for this topical product.

Clinical pharmacology

Amorolfine is a topical morpholine antifungal that inhibits fungal sterol biosynthesis, reducing ergosterol and causing abnormal sterols to accumulate. It penetrates and diffuses through the nail plate; systemic absorption is very low and accumulation has not been demonstrated with prolonged topical use.

Formulation and product differences

• The selected formulation is an ethanol-containing medicated nail lacquer.
• Packs may provide a separate reusable spatula or an applicator integrated into the cap, with cleansing swabs and nail files.
• The lacquer is flammable and should be protected from heat; the bottle should be kept tightly closed.