OCD Treatment or Prevention Products For Horses! OCD afflicts young stock that didn’t receive enough calcium from the mare while in utero. (OCD) is a relatively common developmental disease that affects the cartilage and bone in the joints of horses. It can occur in 5-25% of all horses and can occur in all horse breeds. Finding  effective, affordable solutions to treat or prevent OCD is vital to the health, performance and even the longevity of the horse. Make sure you have information on the best OCD solutions for horses today.