I received these weightloss thermogenic pills by BELDT Labs in exchange for my unbiased honest opinion. I have only taken these thermogenics a couple times however let me stress to you how important it is to go by the recommendations on the bottle of starting with only 1 pill. these are preworkout pills and add an added boost to your energy upon taking them given you a more steady stronger lasting workout without the crash. I cannot verify the metabolism boost or weight loss yet. I definitely however can verify these give me great boost in energy to help me through a nice workout and keeps me going a bit after but not too much energy that I am unable to sit still as some energy products give me. This comes with a free download of a great book that gets delivered to your email after purchase. Give it a shot what do you have to lose but pounds and inches.