Global Herbs Sarc-Ex. Help keep your horses and ponies happy and healthy with Global Herbs Sarc-Ex. Offering an advanced and unique formula, Sarc-Ex provides nutritional support for the immune system of the horse. With strong anti-oxidant herbs to help encourage the body to cope whilst maintaining normal structure and function, Sarc-Ex helps the body to defend itself and aid in normal repair. Sarc-Ex can be fed all year for ongoing support and is suitable for all horses and ponies.