All Natural Herbs for a Horses Joints & Cartilage With an old horse, just like an aging human, joints and ligaments can be a problem. As the aging process continues, your equine’s leg, ankle, and knee can cause issues. Some symptoms can be audible, like popping, clicking, and cracking in the leg. As the joints and cartilage age, your equine may need some extra nutritional support and supplementation. Silver Lining Herbs is preferred by many equine veterinarians as the best alternative supplement for joints and ligaments. All-natural and made from herbs and plants, our NASC Quality Seal supplements are designed to support your equine’s health naturally.