Trans-Resveratrol 98% 500g Bulk Powder New Larger Pack - Lower price per gram! Pure High-Quality Emodin Free Trans-Resveratrol. Save money buying in bulk - 2000 servings of 250mg! All Supplements come in properly packed and sealed foil pouches Resveratrol is found in the skin of red grapes and in other fruits and in Japanese Knotweed/Giant Knotweed (Polygonum cuspidatum) and can also be produced by yeast fermentation. The main commercial source is from Knotweed. Knotweed is a good option when you make sure you get the 98% (not 50%) as then any other compounds in it that you don't want to eat in any quantity such as Emodin has been removed! In Resveratrol supplements, these impurities are largely responsible for any side effects which is why you should always choose the high concentration 98-99% one without the impurities. Always read the label carefully before buying. Many products show you a large mg amount, but only tell you in the fine print they are only 50% Resveratrol, or fill up the rest with other cheaper products. Only use the 98% or better Trans-Resveratrol if you want the benefits of Resveratrol without side effects. This product is High Quality 98% Pure Trans-Resveratrol powder, with no fillers or additives... The benefits of Resveratrol are too many to list here, and there is plenty of research on the internet about this amazing compound. Some of the things Resveratrol is taken for: Anti-ageing Antioxidant and cell protection Increase endurance and energy many others... Suggested use: 250-1000mg a Day What is the quality or concentration? With some supplements, you have to read the fine print to find out it's mixed with secondary cheaper products to make it look like you are getting more... This is just the pure product, and nothing else - no fillers or extras. Item is packaged in Australia from imported ingredients.