Determination of the sales price of the product you have reviewed and the sales operation are under the control of the company. A maximum of 10 units of this product can be ordered at a time. Product Content Resveratrol for each 25ml: 200 mg Quercetin: 50 mg Grape Seed Extract: 100 mg High Purity Active Ingredients Resveratrol is supplied by Veri-tefirma, a registered and patented trans-Resveratrol brand of Switzerland. Quercetin is obtained from the Sophorae japonica plant in 95% purity. Grape Seed Extract - is an extract obtained from natural grape seeds and is 96% pure. How to Use VitisferaResveratrol Shot is suitable for use by ages 12 and above. Unless otherwise recommended by the physician, it should be used as 1 vial (shot) once a day after a meal and shaken well before use. In general, clinical studies recommend use for 12 weeks.