L-Tryptophan inodiwa pakukura kwakajairika muvacheche uye kune nitrogen chiyero muvakuru, iyo isingakwanise kugadzirwa kubva kune zvimwe zvakakosha zvinhu muvanhu nedzimwe mhuka, zvichiratidza kuti inowanikwa chete nekudyiwa kwe tryptophan kana tryptophan-ine mapuroteni emuviri wemunhu. iyo inonyanya kuwanda muchokoreti, oats, mukaka, cottage cheese, nyama tsvuku, mazai, hove, huku, sesame, almonds, buckwheat, spirulina, uye nzungu, etc. Inogona kushandiswa sekuwedzera kwekudya kwekushandisa se antidepressant, anxiolytic, uye rubatsiro rwehope.