One that's easy to find in stores is "collagen peptides", I add them to oatmeal, pretty good. And to echo a sibling comment, unflavored whey protein is harder t

One that's easy to find in stores is "collagen peptides", I add them to oatmeal, pretty good. And to echo a sibling comment, unflavored whey protein is harder to find, but it's out there, one of my grocers stocks it.