Lamisil

Lamisil contains terbinafine, an allylamine antifungal agent. It works by inhibiting the enzyme squalene epoxidase in the fungal cell membrane, leading to squalene accumulation and ergosterol deficiency, which causes fungal cell death. Oral Lamisil is primarily used for systemic nail infections, while topical forms are used for superficial skin infections.

Dosage by Body Weight

For topical formulations, apply to the affected area once or twice daily for 1 to 2 weeks. For oral tablets, the standard adult dose is 250 mg once daily for 6 weeks (fingernail tinea) or 12 weeks (toenail tinea). Pediatric oral dosage must be determined by a physician based on body weight.

  1. Body Weight
    Below 5 kg
    Dose
    Not recommended
    Frequency
    Do not use
    Tracking Notes
    Safety and efficacy have not been established in infants and small children.
  2. Body Weight
    5-7 kg
    Dose
    Not recommended
    Frequency
    Do not use
    Tracking Notes
    Safety and efficacy have not been established for this weight range.
  3. Body Weight
    8-10 kg
    Dose
    Not routine
    Frequency
    Use only if prescribed
    Tracking Notes
    Oral terbinafine is typically not recommended for children weighing less than 10 kg.
  4. Body Weight
    11-15 kg
    Dose
    62.5 mg once daily
    Frequency
    Once daily
    Tracking Notes
    Pediatric dosing for tinea capitis (scalp ringworm) is determined by a specialist. Usually administered for 4 to 6 weeks.
  5. Body Weight
    16-20 kg
    Dose
    125 mg once daily
    Frequency
    Once daily
    Tracking Notes
    Standard pediatric oral dose for children weighing 10 kg to 20 kg.

Formulation

TabletCreamGelSpraySolution

Purpose

Treatment of fungal infections of the skin and nails, including athlete's foot (tinea pedis), jock itch (tinea cruris), ringworm (tinea corporis), and fungal nail infections (onychomycosis).

Generic Name

Terbinafine

Scheduled Drug

Yes. This medicine should be supplied or used only according to applicable prescription and regulatory requirements.

Alternatives

Disclaimer: This information is for educational purposes only. WHO references and weight bands are simplified for tracking and must not replace medical advice. Always consult with a healthcare professional before starting or changing any medication.