5-HTP produces serotonin, which can be converted into the hormone melatonin. Melatonin plays an important role in regulating sleep. Its levels begin to rise in the evening to promote sleep and ...

They’re both also packing tryptophan, an amino acid responsible for producing melatonin and serotonin ... all of which contribute to melatonin synthesis and improved sleep,” says Palinsky ...

“In contrast,” she notes, “kiwi fruits - which are rich in both melatonin and serotonin, a neurotransmitter that plays a key role in regulating sleep - have shown stronger evidence of ...