English Dictionary

tryptophan

/ˈtɹɪptə(ʊ)fæn/

noun

(biochemistry) An essential amino acid having an indole side chain; it is present in many foods, especially chocolate, oats, bananas and milk; it is essential for normal growth and development and is the precursor of serotonin and niacin; any specific form of this compound, or any derivative of it.

Tryptophan is an essential amino acid found in many foods.

意味（1）

(biochemistry) An essential amino acid having an indole side chain; it is present in many foods, especially chocolate, oats, bananas and milk; it is essential for normal growth and development and is the precursor of serotonin and niacin; any specific form of this compound, or any derivative of it.

The quickest way to raise serotonin levels again is to send more tryptophan into the brain, because serotonin is made from tryptophan.