The dietary supplement Jack Rabbit, which is marketed as "100 percent natural," was recalled this week after ingredients used in prescription-strength erectile dysfunction pills were found in a sample.

Jack Rabbit Inc. announced a voluntary, nationwide recall on Tuesday. It told customers of the product, which is used to enhance sexual pleasure and performance, to discontinue use of the supplement immediately after it was deemed an “unapproved drug” by the U.S. Food & Drug Administration (FDA), which discovered the presence of of Sildenafil and Tadalafil in a sample. According to the company’s press release, the FDA found the two active ingredients, which require a prescription in the U.S. and are used to treat erectile dysfunction, in a sample of the product, which is advertised as an "herbal" (as opposed to synthetic) remedy. The sample was identified as "lot code 2510."

The Florida-based company reported no known illnesses connected with the recalled product but advised customers with diabetes, high blood pressure, high cholesterol or heart disease to see a physician if any health issues occur. “The active drug ingredients are not listed on the product label. The undeclared ingredients may interact with nitrates found in some prescription drugs such as nitroglycerin and may lower blood pressure to dangerous levels,” the release said. It added that side effects from taking the defective batch include headaches and flushing. 

“[We are] committed to providing accurate information about its products because of concerns for the health and safety of consumers,” the press release said. “Jack Rabbit Inc. is working voluntarily with the FDA in the recall process. It sincerely regrets any inconvenience to customers.”

According to the biography of the Jack Rabbit product on the company’s website, the supplement is made from “herbal plants” and has no side effects but may cause a “harmful” decrease in blood pressure when taken with blood pressure medication.

Customers with unused products are advised to return the pills to its original retail location or contact Jack Rabbit Inc. ( to receive a direct address for returns.