	When NHL play resumed in 2005–06, it was revealed on February 9, 2006, he had failed a random drug test conducted prior to the 2006 Winter Olympics. The failed test was later revealed to be caused by a prescription hair loss medication Propecia, which Théodore had been taking legally for eight years. Propecia contains the drug finasteride, which can be used as a masking agent for the performance-enhancing drug nandrolone among weight-trainers and bodybuilders, but it is not a performance-enhancing drug in itself. Théodore did not face any punishment from the NHL because he had applied and received approval for a therapeutic use exception. However, he did receive a two-year suspension from international play.