The Natural Horse Vet Aller Check Lung, Skin & Immune Formula Horse Supplement makes it easy to keep your equine buddy feeling his best. This supplement provides targeted support to help maintain a healthy immune system while battling allergic-type conditions. It’s a fantastic choice for seasonal or year-round allergies. It helps to soothe allergy-related skin issues, support respiratory health and enhance your buddy’s immune response for a happier, healthier horse.