When I bought it, it was very expensive b/c I was also 16-17yrs old and I thought it would work better. Two years ago it was my first workout supplement I ever tried for sports and it was semi-effective but I don't think I worked out enough for it to be effective. I work out much more now than back then and now I would know how it is more effective. I also think the guy at GNC
saw a HS kid who had no knowledge on workout supplements and told me what the "research" says and I bought it, bad idea at that time b/c it was $50 and it was semi-effective but when I used it up last year it became more effective when in college. I stacked it with Pro Complex
during college so that may be why it was more effective. But at the time I bought it Creakic
was the #1 supplement at any GNC
but now there are much more ones that are more effective.