Sun Food Energy Natural Phyto-Oxidants 0.8% Anthocyanidins 1 Daily Dietary Supplement Quality You Can Trust Discussion: Studies suggest that Tart Cherry (Prunus cerras L.) may provide some of the highest levels of Anthocyanins. Anthocyanins are bioactive phyto-oxidants that help support the body's natural free-radical-scavenaging mechanisms, and have been studied for a wide range of potential health benefits. Nature's Life Tart Cherry contains 0.8% of optimal Anthocyanins.