For healthy equine muscle function. Fast exercise produces lactic acid in the muscle and as a result, many horses suffer from muscle stiffness or cramps during, or after work, leaving the horses looking 'tucked up'. Tye-Gard contains a highly absorbable human grade Vitamin E and Selenium, two vitamins involved in the health of muscle tissue, allowing the muscle to work more effectively at full capacity. Use Tye-Gard daily for horses in high levels of training or competition to ensure optimum muscle health. 2 Months supply.