Search for "resveratrol and grapes" under Baidu, and you can browse to 1736 related academic papers. It is described in the paper that resveratrol was first discovered in grape plants in 1974, and it is an autogenous "stress-resistant" substance. Generally speaking, it is a component substance produced by grapes in the process of growth to resist external toxins and bacterial infections. At present, 72 species of plants are known to contain resveratrol. However, in terms of content and quality, Vitis ranks first.
However, it should be noted that there are many kinds of resveratrol products on the market. Most of them are capsules and tablets in China, which are made by chemical synthesis technology. The price is relatively cheap, but they have no biological activity.
There is a kind of resveratrol imported from the United States, which is naturally extracted from grapes, blueberries, mangosteen and other plants, and retains the biological activity of resveratrol. Take two milliliters under the tongue every day, with high purity, easy absorption and, most importantly, safety and reliability. It is a good choice for health care of middle-aged and elderly people.