Griseofulvin is very effective against fungi in hair and skin but is not very good at treating yeast or bacterial infections. The Griseofulvin gradually accumulates in the skin and hair, it especially likes to bind with keratin which is a common component of hair and nails. The Griseofulvin blocks the fungus from infecting the keratin. It most likely stops the fungi from building new cell walls. The Griseofulvin is taken for several weeks.
People usually have to return to the clinic at regular intervals to see if the infection has gone.
Most people tolerate Griseofulvin very well. Side effects can include upset stomach, headaches, and fatigue.