We've assembled a line-up of the best joint care supplements we could find. Low-molecular levels of key ingredients are most important to get the needed ingredients into the horse's system. Liquid joint care is very unstable and has a short shelf-life so you won't find many here. We've waded through the myriad of products to select the ones that have a strong background for research, good referrals from unpaid endorsers and low molecular levels of key ingredients.