The maker of the dietary supplement OxyElite Pro is recalling some of its products, which have been linked to an outbreak of liver illnesses, the Food and Drug Administration (FDA) said Saturday. There is a reasonable probability that the products are adulterated, according to the FDA.

USPlabs was notified by the FDA last week that if it did not recall the supplements voluntarily, the agency would order the company to halt distribution of the products immediately, and would tell other retailers and distributors to stop selling them. The supplements are sold for weight loss, USA Today reports.

“We took this step to ensure that adulterated and harmful products do not reach the American public,” FDA Deputy Commissioner Michael Taylor said in a news release.

The recalled products include certain packages of OxyElite Pro Super Thermo capsules, OxyElite Pro Ultra-Intense Thermo capsules and OxyElite Super Thermo Powder.

Last month, the Centers for Disease Control and Prevention (CDC) reported the Hawaii Department of Health was notified of seven patients with severe liver disease of unknown cause. The patients were previously healthy. Seven patients had used OxyElite Pro. As of last Wednesday, the CDC said it had confirmed 56 cases of liver illnesses since April 1 in the outbreak linked to the product, the newspaper notes.