All Natural Herbs for Horse Liver Function Just like humans, a horse needs a healthy, functioning liver to survive. The liver performs an incredible number of tasks in an equine’s body, and liver issues can leave any number of these tasks unperformed, increasing the risk of disease, infection, or even liver failure in your horse. Liver issues are bad news. You need to protect against any liver problems before you see symptoms. Silver Lining Herbs all-natural herbal liver supplements improve and facilitate healthy liver function in your horse, helping to reduce the risk of liver disease or failure and other disorders associated with an unhealthy liver. And with the NASC Quality Seal, you know you’re getting a great product from people who care.