Does anyone have any experience with pre-workout mixes? 

I’ve been going to the gym lately, but if I go more than 3 days a week I really struggle with fatigue. A friend of mine suggested a pre-workout mix but it’s got 300 mg of caffeine in one hit and an assload of sugar and B vitamins. I’m concerned it’ll be a hypomania trigger.

Had anyone had any luck with these types of things? Any recommendations for a less hardcore mix or alternative? 

My pdoc is out on vacation, so I can’t pick his brain on this for a little while yet.