All Natural Herbs for Horses with Low Libido Is your stallion a “shy breeder” uninterested in reproduction? Does he display a lack of interest in mares or a low sex drive in general? Low libido in a horse could be caused by a number of issues, or may simply be a result of your equine’s natural hormonal state. Luckily Silver Lining Herbs has 100% all-natural herbal supplements that will help to increase your horse’s libido and fertility, improve breeding soundness, and return your horse’s hormones to a balanced and natural state. With the NASC Quality Seal, SLH is a brand trusted by horse lovers across America for issues related to breeding and reproduction. Many vets turn to our supplements for increasing equine libido and more.