Here's my fav collagen powder:
https://carnivoreaurelius.com/products/pure-collagen-from-brazilian-cows
nostr:npub14am887cf6kvwkce89nt7dsw3v9qrrn0uppxyvr6a2jd7xdwuwccqwnudp2's co makes best n class desiccated liver caps, which is a good starting place.
Here's my fav collagen powder:
https://carnivoreaurelius.com/products/pure-collagen-from-brazilian-cows
My impression of Brazilian beef is that it is extremely hit or miss for quality
