Levoamphetamine causes lack of focus.
Muscle Champion  : Kinnikuto Kessen , or Martial Champion , is an action-adventure video game released in 2002 by Konami .. Konami. Konami. action-adventure. action-adventure game. video game. video game. The game was released only in Japan .. Japan. Japan. Category  :2002 video games. Category  : GameCube-only games. GameCube. Nintendo GameCube. Category  : Action-adventure games. Action-adventure. Action-adventure game. Category  : Konami games. Konami. Konami. Category  : Japan-exclusive video games. Japan. Japan. Category  : GameCube games. GameCube. Nintendo GameCube