@pat9892 how I wish I had clear answers ! I’m planning to get collagen from food- protein and bone broth in particular…like yourself, i don’t trust the ads….for me, easy slow exercises/ stretches before getting out of bed erases early stiffness..no fancy guide, just wiggle everything gently..i start with toes/feet and work my way up. I am interested in skin creams with collagen/peptides—they can be found on Amazon, so I’ll try Olay’s version, inexpensive and non-greasy… trial and error, keep trying…wishing you all the best health !