Quote:
Originally posted by sickkittens
I thought melatonin was from the brain. Where is it derived from? (the pills that is)
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"Melatonin is a vertebrate hormone C13H16N2O2 that is derived from serotonin, is secreted by the pineal gland especially in response to darkness, and has been linked to the regulation of circadian rhythms"
Merriam-Webster Medical Dictionary