red cell liquid - 32 oz farnam red cell liquid is the "industry standard" vitamin-mineral supplement for fueling champion horses. red cell is a potent, reliable and homogenized for maximum consistency; contains 300 mg. of chelated iron per ounce and yucca flavoring for added palatability. directions: horses in training: feed 2 fluid ounces of red cell daily. horses not in training: feed 1 fluid ounce of red cell daily. feed red cell by mixing into daily feed ration or orally with a dose syringe.