The NFL has toughened up its drug policy, adding amphetamines to the list of banned performance-enhancers starting in 2007. Amphetamines were previously listed as a "substance-abuse drug," but are now in the same category as steroids and other enhancers that carry much stronger penalties. Next year will serve as a transition year, where a first positive test would bring a warning and put a player into the drug program. But in 2007, amphetamines will be tested for on a regular basis.