Kim Kardashian and sister Khloe could get sued over diet product

New York -  Kim Kardashian and her sister Khloe could face a class-action lawsuit over their promotion of a diet product which reportedly contains high levels of caffeine, an ingredient that’s  “not safe or effective for weight loss.”

The siblings caused a stir over their paid endorsement of QuickTrim, which features a picture of bikini-clad Kim. It has reportedly generated 45 million dollars in revenue since they struck  the deal with New Jersey-based Windmill Health Products in 2009.

Law firm Bursor and Fisher is preparing a suit against Windmill and the marketing claims made by the Kardashians.

An e-mail it sent to product users included a link to the firm’s Web site, which states, “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.”

“My firm has been retained by an individual that purchased QuickTrim, and we are investigating the matter. We have provided written notice of our client’s claims to the company and others involved in marketing QuickTrim,” the New York Post quoted partner Scott A Bursor as saying.

In January 2010, the former wife of NBA star Kris Humphries said that she used QuickTrim to shed 15 pounds in weeks. Last year she tweeted that she was using it to get in shape for her  wedding, and Khloe also claimed she lost 15 pounds.

Adriane Fugh-Berman, a physician at Georgetown University Medical Center, warned in 2010 that QuickTrim contains large amounts of caffeine.

“They’re not saying how much caffeine is in these pills. Too much caffeine can make you jittery and increase your blood pressure and pulse. If you pop a couple of these pills with your  Starbucks . . . you could get caffeine poisoning, which can cause heart arrhythmias,” she said.