Kim Kardashian and sister Khloe could be facing a possible lawsuit over the diet product QuickTrim, which the girls endorsed.

The detractors say the product has high levels of caffeine. This is a problem because the FDA determined that “caffeine is not safe or effective for weight loss.”

The product has reportedly gained $45 million in revenue since its conception in 2009.

The law firm Bursor & Fisher is planning to sue Windmill Health Products and the Kardashians for their marketing claims. The firm claims that “the active ingredient in QuickTrim weight loss products is a large dose of caffeine. . . The FDA has determined that caffeine is not safe or effective for weight loss.”

In January 2010, Kim claimed to have used QuickTrim to shed 15 pounds in just a few weeks. Both sisters have starred in commercials for the product as well.

Here’s the thing, this firm is obviously just trying to get some cash and some publicity.

Did anyone sue Mary-Kate Olson when they found out Bulimia was bad for you?

Sorry Mary-Kate, just kidding.