ʻO Phenylalanie kahi amino acid pono a ʻo ia ka mua o ka amino acid tyrosine.ʻAʻole hiki i ke kino ke hana i ka phenylalanie akā pono ia i ka phenylalanie e hana i nā protein.No laila, pono e loaʻa i ke kanaka ka phenylalanie mai ka meaʻai.Loaʻa 3 mau ʻano phenylalanine ma ke ʻano: D-phenylalanine, L-phenylalanine, a me DL-phenylalanine.Ma waena o kēia mau ʻano ʻekolu, ʻo ka L-phenylalanine ke ʻano kūlohelohe i loaʻa i ka hapa nui o nā meaʻai i loaʻa nā protein, e like me ka pipi, ka moa, ka puaʻa, ka iʻa, ka waiū, ka yogurt, nā hua manu, ka paʻakai, nā huahana soy, a me kekahi mau nati a me nā hua.