Has anyone here used this: http://www.vitaminshoppe.com/store/en/browse/sku_detail.jsp?id=YH-1018A friend of mine has been using it for about four months and his musculature seems to have exploded.Thoughts? Concerns? Testimonials?
it's creatine. he probably works out. he's probably under 30 years old. it's been months.what do you expect?