All Natural Herbs for Horses with Blisters Does your horse get painful blisters from brushing or combing? Promoting nerve function and increasing your horses immunity can be the answer. Silver Lining Herbs has created a collection of specially formulated herbs and herbal supplement alternatives designed specifically to minimize blistering on your horse/s. Thousands know and trust Silver Lining Herbs, equine veterinarians all over the world recommend our herbal supplements for horses. In addition, we carry a trusted Quality Seal from NASC, which means we honor and comply with a number of quality standards that ensure that your horse is getting a high quality product.