Milled flaxseed is a beneficial supplement for horses' rations1. It is low in sugar and starch, making it safe for horses with insulin resistance, PPID (Cushing's), and PSSM2. It is high in fiber, with a large amount of pectin and mucilage, which create a soothing gel inside the digestive tract2. Research suggests that adding one pound of milled flaxseed per day can reduce the allergic response to recurrent seasonal pruritis, or sweet itch1.