This is a powerful anti-oxidant that also acts as a liver tonic, blood cleanser and immune system booster. Long term use affords protection against the effects of free radicals &assists in protecting your liver function . Blood circulation is greatly improved assisting with a better blood flow to legs & feet. Research has shown that Bilberry at the high potency of 16,000mgs assists & in some cases reverses most eye ailments, including macular degeneration and cataracts. For Day & Night blindness it is very effective and it improves age related sight problems.