D-Ribose - 1000 mg - More muscle power and perserverance [more info...] Natural anti-anxiety and stress relief ingredient. Used to control stress-related eating and drinking that has the added value of being non-sedating with potential anti-depressant properties. The most important biological molecules contain D-ribose. Cardioprotective effects. Used to generate ATP. Increases the rate at which ATP is generated, leading to an improvement in exercise performance and faster muscle growth.