28 Apr 2016 --- New clinical research results show that Arjuna’s OXYSTORM can help athletes work out longer and harder. OXYSTORM is an extract of Amaranthus one of the sources of nitrate in nature. Arjuna’s patent-pending production process delivers an optimum level of nitrate content from the leaves of Amaranthus species – 9,000mg/100g – which is more than the amount of nitrate from beetroot powder and beet juice.