I purchased the GlycanAid-HA, I love, love, LOVE the GlycanAid-HA!!!! Angus has been on supplements for years, but he is so much better after taking this. Angus is only 3 years old, but has had 2 ACL surgeries–both knees; so you understand my concern with his quality of life. He was just over 1 yr old when his first knee blew & I was concerned for him to hopefully have a very long & happy future. Since using the GlycanAid-HA, he has been running HARD, he can catch Maggie (our 3 year old basenji) now and Maggie is very fast. He streeeeetches long, he’s starting to jump again when he’s excited & he’ll stand on his hind legs on the couch to look out the window. These are all changes that have occurred since being on the GlycanAid-HA. Thank you so much!!!!! We are all so very happy.