If you are wondering whether deworming your horse is beneficial, then you should know that it is crucial that you deworm your horse if you want to keep him/her in good shape and health. The reason is that failing to deworm can result in a worm infestation which results in weight loss, bloating, diarrhea, a rough coat, among other serious health problems. So, for you to maintain your horse’s health, then you must be willing to deworm him/her as recommended.