NEW YORK, May 30 (AP/UNB) — The Food and Drug Administration is warning consumers that a counterfeit version of the attention deficit hyperactivity disorder drug Adderall is being sold over the Internet.

The FDA says the product purports to be 30-milligram Adderall tablets, but it does not contain the right ingredients. The pills contain the pain drugs tramadol and acetaminophen instead. The agency says the counterfeit tablets are white and round, and they do not have any markings like letters or numbers. Genuine Adderall tablets are an orange/peach color and have the letters "dp" embossed on one side with the number 30 on the opposite side.

Adderall is made by Teva Pharmaceutical Industries Ltd., and it is used to treat ADHD and narcolepsy. The drug is in short supply because of shortages of the active ingredients.