Check the listing for details. Perfect Products Prep Lactalex Supports Optimal Muscle Function. Condition: New. Listed at 13.98 USD. Lactalex™ helps your horse’s muscles work harder for longer and recover quickly with the industry’s highest concentration of active ingredients. Helps your horse’s muscles work harder for longer, with quicker post-exercise recovery. Created for high level equine athletes who often battle exercise-induced back and muscle soreness. Provides what every muscle needs for pre-event support and post-performance recovery in one formula. Supplies the industry’s highest level of concentrated active ingredients for powerful results. The only complete muscle support formula available in both a daily powder and targeted pre-event paste. Contains no prohibited substances. Directions for use: Feed 30cc (1/2 tube) the night before performance and 30cc (1/2 tube) 4 hours prior to performance.