In some aspects, the disclosure relates to compositions useful for the dietary management of inborn errors of metabolism (e.g., PKU, MSUD, HCU, IVA, and MMA/PA). In some embodiments, the disclosure provides a composition comprising a protein source, a fat source, a carbohydrate source, at least one vitamin, and at least one mineral, wherein the protein source comprises at least six free amino acids. In some aspects the disclosure relates to compositions that support bone health.