Anecdata, but putting it out there because HN comments have solved many medical problems of mine that doctors couldn't:
I had a wound that wouldn't close and the thing that eventually got it to close was topical collagen powder - packed directly into the wound. This is something that the literature is quite positive on, but large Western hospitals mostly don't do for some reason. On oral collagen, the literature seems a bit more mixed but still generally positive. Collagen is something that used to make up a much larger part of our diet, so at the very least I don't think there's much risk in trying - and perhaps there are other benefits.
I had a wound that wouldn't close and the thing that eventually got it to close was topical collagen powder - packed directly into the wound. This is something that the literature is quite positive on, but large Western hospitals mostly don't do for some reason. On oral collagen, the literature seems a bit more mixed but still generally positive. Collagen is something that used to make up a much larger part of our diet, so at the very least I don't think there's much risk in trying - and perhaps there are other benefits.