how long does it take for griseofulvin to work

Griseofulvin starts working immediately by inhibiting fungal growth, but visible improvements typically take several days to weeks to appear. For skin and hair infections, it may take up to a few weeks to notice a difference, while nail infections can take up to a year to clear completely. The duration of treatment varies: 2-4 weeks for skin infections, 4-6 weeks for scalp infections, 3-4 months for fingernail infections, and at least 6 months for toenail infections. It is essential to complete the full course prescribed by the doctor to prevent recurrence of the infection.