My local Complete Nutrition is having a buy one get one free stack for a limited time. My friend and I heard about other friends getting serious results from these stacks and were thinking about trying one. The stack we looked at was a 5 Deca-Zol, 3 Test-Oxo, and MegaShred stack. On the box it says you only have to be 18 to take this stuff. I turn 18 in October so was thinking about buying it now and waiting until then to take it. But I've always been told to stay away from stuff like this until at least 21 and fully grown. I went to the doctor yesterday and I found out that I'm done growing. So my question is this, since I'm done growing, turn 18 soon, and there is a buy one get one free sale where I can split the money with my friend, would it be okay to buy one of these stacks and take it? Or should I wait a couple more years before I start experimenting with this kind of stuff?