Global Herbs Winter Boost 1kg. Global Herbs Winter Boost is a Palatable supplement is perfect for nutritional protection this winter. Winter Boost can be fed throughout the cold wet conditions, helping to relieve the stress of winter as your horse and its immune system receive all the nutritional support they need. The adaptogenic Winter Cherry, Rich Minerals and antioxidant Amla Fruit provide strong immune support and together with the Indian Echinacea take the stress out of the rough winter months. Read more… Key Ingredients: Rich Minerals, Amla Fruit, Winter Cherry, Indian Echinacea, Trailing Eclipta and Hurricane Weed. For more information on Global Herbs products contact the FREE vet advice line on 01243 773363.