It could also just be the diflucan making you drowsy. When in the day do you take it?
I've been taking it first thing in the morning on an empty stomach with 2 caps NOW Candida Support, 2 caps Candex and 10 drops Biocidin.
The fatigue has been in the morning getting out of bed before taking these.
Oddly enough today, I popped up right out of bed so something is changing...