Global Herbs SuperCalm. Help promote a calming lifestyle with Global Herbs SuperCalm. Featuring a fast, complete and natural approach to calming, SuperCalm helps to calm worry and nervousness whilst promoting relaxation and good behaviour. Offering a natural antioxidant which helps to support the immune and digestive system, SuperCalm is perfect for horses out competing or dealing with separation worry or other stressful situations. SuperCalm is ideal for long or short term use and is suitable for all horses and ponies.