Fluconazole (100-150 mg) and terbinafine( 250 mg) taken daily will they cancel each other out or "enhance" each other. I was told that if you have a fingernail/toenail infection the groin area must be treated at the same time. Then I was told that they cancel each other out, then I was told that terbinafine levels increase with fluconazole. Which one is it?