SHIELD YOURSELF WITH QUINA MICROBIAL SUPPORT + IMMUNE DEFENSEᶧ  Protect yourself against the unknown with Quina. Our unique herbal formula was strategically designed to deliver Calisaya bark (Cinchona), a wild harvested bark from South America that may offer immunity and microbial support. Quina is a highly bioavailable liquid that can be easily incorporated into any daily routine.ᶧ