Placid Rein PLUS®Nervous and Anxious Horses For behavior problem management Helps maintain calmness May improve focus and attitude With resveratrol and withania What is Placid ReinPLUS? Placid Rein PLUS is a unique powdered formula designed to support normal stress in horses and to help maintain a consistent attitude to work whether at home or away. Unlike Placid Rein, Placid Rein PLUS includes resveratrol, an antioxidant that may help the body detoxify free radicals,