5-Hydroxytryptophan (5-HTP) ndi amino acid yomwe ndi gawo lapakati pakati pa tryptophan ndi serotonin yofunika kwambiri mu ubongo. Pali umboni wambiri wosonyeza kuti kuchuluka kwa serotonin m'thupi ndi zotsatira zofala pa moyo wamakono. Moyo ndi zakudya zomwe anthu ambiri amakhala nazo nthawi ino yodzaza ndi nkhawa zimapangitsa kuti serotonin ikhale yochepa mu ubongo. Zotsatira zake, anthu ambiri ndi onenepa kwambiri, amalakalaka shuga ndi zakudya zina, amavutika maganizo, amadwala mutu pafupipafupi, komanso amamva kupweteka kwa minofu kosamveka bwino. Matenda onsewa amatha kuthetsedwa powonjezera kuchuluka kwa serotonin mu ubongo. Ntchito zazikulu zothandizira 5-HTP ndi kuchepa kwa serotonin monga momwe zalembedwera mu Table 1.