Powerful Antioxidant Boosts Energy & Immune System Promotes Healthy Skin Discover the Amazon Superfood. Acai (ah-sigh-ee) is a small purple berry from the Brazilian Amazon that has been found to be one of the mostnutritious and powerful foods on the planet - jam packed with antioxidants, healthy omega fats, amino acids and dietary fiber. Power Caps are the first acai whole food capsules - which, unlike extracts, completely captures the unique synergy of health benefits found in this miraculous little fruit.