- Support your horse's immune system naturally with Global Herbs Sarc-ex. This convenient 2.56 pound pack helps animals with skin concerns by improving gut health and nutrition. Regular supplementation with Guduchi vine, Eclipta, Hurricane Weed, and Indian Gooseberry helps your horse fight pathogens. While taking it, your horse will experience an improvement in their mood. The antioxidants within help animals recover quickly from cuts and abrasions sustained during training or competition.