Flavoured Vitamin-Mineral Supplement for Horses. Equicell-R is a liquid feed supplement for horses, fortified with iron, and formulated to provide supplemental vitamins and minerals which may be lacking in the horses normal feed. Guaranteed Analysis: Per Kg: Vitamin A (min.) 1,190,000 IU Vitamin D3 (min.) 259,000 IU Vitamin E (min.) 1,530 IU Vitamin B12 (min.) 6,000 mcg Thiamine (min.) 3,400 mg Riboflavin (min.) 950 mg Pyridoxine (min.) 340 mg Menadione (min.) 85 mg Niacin (min.) 9,180 mg Folic Acid (min.) 340 mg Biotin (min.) 0.800 mcg Choline (min.) 7,820 mg Pantothenic Acid (min.) 1,700 mg Iron (actual) 9,500 mg Copper (actual) 900 mg Cobalt (actual) 130 mg Zinc (actual) 3,400 mg This feed contains added Selenium at 8 mg/kg.