I believe they make methionine via chemical synthesis so it’s vegan.
For me personally, I get most of my daily protein from soy so I don’t worry about methionine, but I do have some methionine pills for when I need them. I also have lysine pills which pair well with wheat protein.
You can buy methionine pills or powder: https://www.amazon.com/s?k=methionine&ref=nb_sb_noss
I believe they make methionine via chemical synthesis so it’s vegan.
For me personally, I get most of my daily protein from soy so I don’t worry about methionine, but I do have some methionine pills for when I need them. I also have lysine pills which pair well with wheat protein.
Recently I was annoyed at how difficult it was to figure out the protein quality of my diet so I built a calculator: https://mdickens.me/2024/08/29/DIAAS_calculator/