Freeze-Dried Supports Healthy Immune System Response Free Radical Scavenger Acai Berries, indigenous to Brazil, are one of the planet’s most remarkable and nutritious fruits. They naturally possess phytonutrients like polyphenols, including ellagic acid, rutin, anthocyanins and catechins. These free radical quenchers help to protect tissues from oxidative stress, a key element of normal aging. The nutrients and free radical scavengers in Acai also help support a healthy immune response and a proper defense against typical biological stress. NOW uses only solvent-free, freeze-dried Acai Berries to better preserve the integrity of the nutrients present in fresh Acai.