My general suggestion is to look at the ingredients before even thinking of buying a product...
The ingredients are as follows
2) Garcinia Cambogia Extract
4) Green tea
Here is a review of Hoodia in current diet pills, unfortunately nothing has changed on that front. (They are not effective, research still going on regarding capturing the appetite suppressant effects of hoodia)
Here is a link on Garcinia (not effective, may be harmful)
Calcium - There has been some evidence that ingesting food containing calcium can help lose weight, but it is minimal and only applies towards foods containing calcium, not pills.
Green tea - There has been some evidence that drinking green tea can help lose weight but again it is minimal and only applies towards drinking green tea.
My advice is save your money