It can be good stuff and I took it for a few years. Always Gabe me nice energy. I used it for lack of sleep plus working seven days a week. Never really craved it. Would t take it when I had days off and would be extremely tired. Thought it was working too much. I researched more and seen it was a side effect so I stopped taking it. Took months for the fatigue to go away. My girl still uses it even though I warned what could happen. Lol. The only time I’ll take it now is if I have the shits. Ha it works better then Imodium for that. So yeah good stuff just be careful. It can creep up on you.