a hormone found in the brain, platelets, digestive tract, and pineal gland. it acts both as a neurotransmitter (a substance that nerves use to send messages to one another) and a vasoconstrictor (a substance that causes blood vessels to narrow). a lack of 5-hydroxytryptamine in the brain is thought to be a cause of depression. also called serotonin.
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出典:Wiktionary
出典:『Wiktionary』 (2025/09/14 17:11 UTC 版)
It is a tryptamine with a hydroxyl group attached to the carbon atom that is numbered as 5.