Old Anti-Malarial Medication
This page is the CodyCross answer for the clue below from All Things Water, Group 1299, Puzzle 2 (Free Diving).
Question is: Old Anti-Malarial Medication
and the answer is: QUININE
Word Meaning:
QUININE — (pharmacology) An alkaloid with the chemical formula C₂₀H₂₄N₂O₂, originally derived from cinchona bark (from plants of the genus Cinchona), used to treat malaria and as an ingredient of tonic water, which presents as a bitter colourless powder; also, a drug containing quinine or a chemical compound derived from it.
Definitions from Wiktionary.