Each MacuSave capsule contains 10mg Meso-Zeaxanthin, 10 mg Lutein and 2mg Zeaxanthin - derived using extracts of the marigold flower (Tagetes Erecta). Crucially these three ingredients are also the same three macular carotenoids found in high concentrations at the back of the eye within the yellow coloured filter or macular pigment which is believed to protect the macula against damaging visible blue light or oxidative stress.