Global Herbs Black Salt is a gentle mineral replacement that is comforting on sensitive stomachs. It has been designed to replace salt that has been lost in exercise, adding trace elements that are essential for normal fitness and good skin condition. Black Salt is a great soother of bowel function and itchy skin, containing iron, magnesium and copper it is a carminative and tonic for your horse's digestive system. Using this supplement provides an effective and easy way to give your horse the extra minerals they need but also soothes those horses that are prone to repetitive abdominal discomfort. Feed a 500kg horse a pinch (2g) daily