Green Coffee Bean
Dr. Oz introduced this raw extract to everyone back in 2012, claiming that it worked as a miraculous fat burner, especially on women. Yet the 100 women he selected during the brief, two-week study shed an average of two pounds. There is not enough data about the product to reach any conclusions, but the suggested dose already contains too much caffeine intake for the day. We'll pass on this one.
Source: US National Library of Medicine
[Photo via @indraneilmallik]