It is amazing to me how good the buyers at Costco are about finding new and fabulous items to add to the store. I bought Celadrin a few weeks ago as a joint pain treatment and have found it to be very effective. I had never heard of it before I saw it waiting for me on a shelf. I went home and did a little checking into it (I admit that I bought it and brought it home before I began this process). Celadrin has had some studies published stating how effective it is and the results looked great. I decided to go for it and have not regretted it! My joints do feel better!