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Exactly what u/TexanTacos and u/Johnginji009 said- you want to make sure you are meeting your protein and calorie needs and if the wound has not been healing well- vitamin C, Zinc and if it is really bad- glutamine and arginine like you can find inJuven (it’s a $$ wound care supplement but you can usually find it in the US at least at the local Walgreens etc.)