Over Reaction is a thoroughbred horse born in Australia in 2007. Race horse Over Reaction is by Over (AUS) out of Rosita's Gem (AUS) , trained by R T Leemon. Over Reaction form is available here. Owned by Mrs G D Leemon, D R T Leemon, N J Taylor, P W Robertson, P C Giles, Cindy Kate Racing Synd (Mgr: P Giles), R M Casson, J P Harris & A Cook.