Equishine Free ChoiceSPECIAL ORDER ITEM ONLY. Please call 608 370 7387 to order. Highly fortified supplement designed for horses on pasture or those who do not receive any grain. Not to be fed with any other source of salt. Ingredients Calcium (Min) 16. 5% Calcium (Max) 20. 0% Phosphorus (Min) 7. 5% Salt (Min) 19. 0% Salt (Max) 21. 0% Sodium (Min) 7. 5% Sodium (Max) 8. 5% Magnesium (Min) 2. 0% Potassium (Min) 1. 3% Sulfur (Min) 2. 0% Copper (Min) 2,500 PPM Iodine (Min) 50