L-Phenylalanine shine ainihin amino acid kuma shine farkon amino acid tyrosine.Jiki ba zai iya yin phenylanie ba amma yana buƙatar phenylalanie don samar da sunadarai.Don haka, ɗan adam yana buƙatar samun phenylanie daga abinci.Ana samun nau'ikan phenylalanie guda 3 a cikin yanayi: D-phenylalanine, L-phenylalanine, da DL-phenylalanine.Daga cikin wadannan nau'o'i uku, L-phenylalanine shine nau'i na halitta da ake samu a yawancin abincin da ke dauke da sunadarai, ciki har da naman sa, kaji, naman alade, kifi, madara, yogurt, qwai, cuku, kayan soya, da wasu kwayoyi da tsaba.