Goji Berries, The Himalayan Superfood. Goji berries used for thousands of years in China, Mongolia and the Tibetan Himalaya Mountains are a rich source of antioxidants such as flavonoids, polyphenols, carotenoids and vitamin C, E and A.The goji berry contains 500 times more vitamin C per weight than an orange and on average have more beta-carotene than carrots. The antioxidant value of goji berries contribute to improving immune system and support overall eye health.