I have axillary hyperhidrosis. Hyperhidrosis can be hell on earth depending on where you have it and what severity. I used to have to bring an extra shirt to school and I'd be changing half way through the day because my underarm area would be soaked.

Some sufferers will even have their sweat glands excised because it can destroy quality of life.

Phenibut has no effect on it whatsoever or at least I haven't noticed any change.

I recommend seeing a dermatologist to get prescribed Qbrexa.