no where you are getting it from, and exactly what it is, I use it a couple times a month and have done so for about three years now. Be careful, yes, but if you're gonna get all freaked about taking it, just like anything else, don't bother. If yah still want to, we're about the same bodyweight, I'm 5'10", and usually start with a 20 oz water bottle cap and toss it right in my mouth, don't mix it in with squat, you'll end up wasting a little of it, wait at least an hour before a repeat dosage. You'll figure it out. Be very careful with alcohol, I drink like a soldier with the stuff, and generally have partied like I was Tommy Lee or something when I cut lose, but I tend to have the tolerance of a rhino to everything. Be good to yourself, it's not much of a party if we're all dead!