I-5-HTP, igama eligcwele elithi 5-Hydroxytryptophan, iyinhlanganisela eyenziwe ngokwemvelo i-amino acid tryptophan. Ingumanduleli we-serotonin emzimbeni futhi igaywe ibe yi-serotonin, ngaleyo ndlela ithinte uhlelo lwe-neurotransmitter lobuchopho. Omunye wemisebenzi eyinhloko ye-5-HTP ukukhulisa amazinga e-serotonin. I-Serotonin iyi-neurotransmitter edlala indima ebalulekile ekulawuleni isimo sengqondo, ukulala, ukuthanda ukudla, nokuqonda ubuhlungu.