Supplement is Valuable but New Packaging and Flavors are Not-so-Great
The supplement works fine, so I still buy it.  However, recently GNC switched their Tri-Flex flavors from chocolate and peanut butter to Salted Caramel and Salted Creme Berry.  The creme berry is the better of the two.  I had to spit out the salted caramel when I sampled it at a local store.  Also the wraps of the Tri-Flex used to be a foil-type wrap, but now they are a hard-to-unwrap waxy paper.  I only keep buying this product because the Tri-Flex does seem to help my knee and hip joints.
Rating: 3 stars