Non-Flavor Liquid For Dogs Oral Hyaluronic Acid (HA) Canine Hip & Joint Formula Supports Healthy Joints Quality Seal - NASC - National Animal Supplement CouncilJoint Health For Your Pet. Hyaluronic Acid (HA) is revolutionizing the joint health management for humans, horses, and now your pets. Found naturally in all living organisms, it provides the elastic shock absorbing properties to support healthy joints for your pet. HyaFlex is patented for joint health, and helps in supporting your pet's a...