In vitro drug sensitivity of trichophyton rubrum against griseofulvin, ketoconazole and fluconazole

The invitro activity of griseofulvin, ketoconazole and fiuconazole was investigated against 50 isolates of Trichophyton rubrum. Ketoconazole was more active, inhibiting all the 50 isolates at a concentration of 5 μgm/ml (MIC range 0.5-5 μgm/ml). Griseofulvin (MIC range 2.5-20 μgm/ml) required 20 μgm/ml of the drug for inhibition of all the isolates. Fluconazole was least active as it inhibited only 2 isolates at a concentration of 20 μgm/ml, which was the upper limit of the test system.