Out of all the substances i've ever put into my body this one has to be the worst for the benefits your supposed to get from it. I started off with 500mg b4 bed and from day one to day 5 I about Sh43t myself all night not to mention the Gastro issues, they where horrible. Then my body seemed to get used to it after day 5 so I then went to 1tab 500mg am & pm. Gastro problems now all throughout the day and night for another 5 days then my body once more got used to it so I suffered and went to 1kmg at night and 1k in the am and same thing happened with really no difference in my physique at all at this point Im like fu$%k this garbage....... Just a miserable drug IMO and would not recommend to anyone.