FAQ

Amorolfine hydrochloride  is a topical antifungal medication used primarily for the treatment of fungal nail infections (onychomycosis) caused by dermatophytes, yeasts, and molds. It works by inhibiting the synthesis of ergosterol, a key component of fungal cell membranes, leading to structural disruption and cell death.

Usage：

1. Fungal Nail Infections:
   • Effective against toenail and fingernail infections caused by pathogens such as Trichophyton rubrum, Candida albicans, and non-dermatophytic molds.
   • Recommended by guidelines (e.g., China Guidelines for Onychomycosis, 2021) for treating sensitive fungal nail infections.
2. Mechanism of Action:
   • Disrupts fungal cell membrane integrity by blocking the enzymes δ14-reductase and δ7-8-isomerase, essential for ergosterol biosynthesis.
   • This results in the accumulation of toxic sterol precursors and the depletion of ergosterol, ultimately killing the fungus.
3. Formulation and Application:
   • Available as a 5% nail lacquer (e.g., Emoni, Loceryl, Chujia), which forms a water-insoluble film on the nail plate, ensuring sustained drug release over 7 days.
   • Applied 1-2 times weekly for 6-12 months, depending on infection severity and nail growth rate.
4. Broad Spectrum of Activity:
   • Active against a wide range of fungi, including:
     • Dermatophytes: Trichophyton, Microsporum, Epidermophyton.
     • Yeasts: Candida spp.
     • Molds: Aspergillus, Fusarium, Scopulariopsis.
5. Safety and Tolerability:
   • Generally well-tolerated, with local side effects such as mild irritation or nail discoloration reported in some cases.
   • Systemic absorption is minimal due to topical application.

Considerations:

• Adjunctive Therapy:
  • May be combined with oral antifungals (e.g., fluconazole) for severe or recurrent infections.
• Contraindications:
  • Avoid use in patients with hypersensitivity to amorolfine or related compounds.
• Patient Compliance:
  • Requires consistent application and nail preparation (e.g., filing) for optimal efficacy.