Supplement That Can Help With Sleep Problems
This page is the CodyCross answer for the clue below from World of Sounds, Group 1350, Puzzle 4 (Babbling Brook).
Question is: Supplement That Can Help With Sleep Problems
and the answer is: MELATONIN
Word Meaning:
MELATONIN — A hormone, related to serotonin, that is secreted by the pineal gland, and stimulates colour change in the skin of reptiles, and is involved in the sleep and wake and reproductive cycles in mammals.
Definitions from Wiktionary.