Dosing of fluconazole for valley fever. Following oral dosing, fluconazole is almost completely absorbed within two hours. Coccidioidomycosis (Valley Fever) Side Effects. . . . is usually amphotericin B, but oral azoles (fluconazole . . Veterinarians often use Fluconazole to treat dogs with Valley Fever, which can cause rashes and flu . . . . A multivitamin supplement and doses of vitamin C . . . . . . drugs are itraconazole (Sporanox) and fluconazole (DiflucanCoccidiodomycosis (“Valley F... more