The product name highlights double glucosamine, and the formula also includes chondroitin sulfate and hydrolyzed collagen. However, this is a topical body gel-balm, not a dietary supplement. The product description describes these components as conditioning ingredients for the area where the gel is massaged in. In other words, they are part of the external formula intended for skin conditioning during massage, not a replacement for oral glucosamine, collagen or a balanced diet.
This distinction matters for expectations. A gel applied to the surface of the skin works differently from something you swallow. If you are considering a joint-supporting routine, this gel can be used as an external addition to an active lifestyle, but dietary supplement choices should be discussed with a qualified specialist.
It is fine to choose this gel when you want a warming-cooling massage product for knees, shoulders, back, neck, elbows or calves. Just do not expect it to provide the same effect as a dietary supplement. It is intended for external cosmetic care and is not a medicine.