Combination of herbs works together to support the female system in preparation for the breeding season. Effective to the point it may benefit mares deemed barren by supporting conception via a normal, healthy hormone balance. #14 Mare Fertility may be beneficial to mares natural ability to deal with hormonal changes. May be beneficial for mares who wont settle, poor haulers, cranky, mean Mare-ness (whether in season or not), hard and too-frequent cycles, progesterone/ testosterone balance and maintaining effective estrogen levels.Contains kelp, red raspberry, sarsaparilla, slippery elm, uva ursi, damiana, eluthro, valerian, dandelion, dong quai, white willow, black cohosh, and goldenseal.Directions for use: Give 1 scoop daily with natural diet for horses 1,000-1,200 lbs. Do not use on mares in the third trimester. Safe use in pregnant animals has not been proven. 1 Tbsp scoop enclosed. 1 lb = 60 day supply.