Fell for the scam before looking up reviews, big mistake. I called to cancel the order and lose the 5 bucks rather than the 90 theyd charge me later and the guy I talked to, Robert, said he'd send the free bottle or whatever and told me to call them when I got it so they would extend the "free" trial to a month to see if I really like it. I will not be billed the 90 bucks unless I want to continue using Optimal Stack, which I probably wont because I am a poor college kid. But he said "No questions asked, we will cancel the subscription and you will not be charged." So go to the website and call them when you order, wont get scammed and you get to see for yourself if it works. I'll post later what I thought of it.