Shopping for Weight Loss Supplements

I often shop online for clothes, shoes, DVD's, gifts, books, vitamins, iron supplements, but never tried buying weight loss supplements. I have been reading a lot of good news about this kind of supplements and how great and effective they are. And that made me think of trying some to see if it will really work for me and my husband. Since there are many weight loss supplements available in the market today, it would hard for me to find the best weight loss supplements he and I can use. I don't have any clue as to how to spot the best one, but search online. I am sure that would really help solve the problem. I don't want to spend money for the thing that doesn't work. Would you? That is why I need to be careful, right?