i drank something similar to this product before. can't remember the name of the product tho.
if it's similar to the one i drank before, you're supposed to drink it before every meal. and after you drink it, your appetite would be lessen.
and also i think the after effects of drinking it would be go to go the toilet after a few hours?
personally i find it rather effective. help detox and all. but i not very sure about the weight loss tho. and it's kinda expensive also.