Nakashiba T, Cushman JD, Pelkey KA, Renaudineau S, Buhl DL, McHugh TJ, et al
Peptides, or small protein fragments, are often too unstable to use as drugs, but in this study, the researchers also developed a way to stabilize the molecules and help them get into target cells
It can be difficult to locate the joint and if you cannot initially feel it you can first palpate the soft spot as shown here which will mark the back of the joint
After 40, tendon quality naturally declines
In terms of other supplements: be cautious with energy drinks or so-called vitamin shots that might also contain high doses of B3 or B6