Mare Magic works great for calming and moodiness. It provides pure, dried Raspberry Leaf to help influence a quiet disposition in mares and geldings Raspberry is an herb widely known for its benefits to mares because it is believed to temper the effects of hormonal fluctuations. The active ingredients help regulate smooth muscle tone in both the reproductive and gastrointestinal tracts, relaxing muscle that is in spasm and strengthening muscle that is weak.