I have difficulty sleeping so I'm always up late at night and it took me watching the Leptoprin commercial about a dozen times before I decided to buy it. It was the 30 day money back guarantee that convinced me to buy it. I would never spend $153 on a 30 day supply diet pill unless it had a rock solid guarantee. I considered buying it on ebay because its selling for only $75-$85 but it didn't come with the guarantee. And if I liked Leptoprin I could always reorder on eBay. So I had nothing to lose. I got my bottle in the mail 3 days later. The bottle looked great (really medical looking). But after reviewing the ingredients I realized that the product is not much more than a caffeine pill with token amounts of other worthless ingredients. But whats most important is did I get my moneys worth? The short answer is NO! In 30 days I lost only 1 pound. For $153 I expected to lose a LOT more than 1 pound. So I sent my bottle back and was refunded in 14 days. When is a diet pill worht $153 a bottle? Never. Especially when its nothing more than a caffeine pill that I can buy on eBay under a different brand name for less than $10. Save your money and search for a cheaper diet pill with green tea on ebay. It will have the same caffeine as Leptoprin but save you $143. Leptoprin was great for energy but again I can buy the same thing on ebay under a different brand name for less than $10. Save your money and try something else.