Resveratrol 99% powder C14H12O3 Senwayer

Resveratrol is a stilbenoid, a type of natural phenol, and a phytoalexin produced by several plants in response to injury or when the plant is under attack by pathogens, such as bacteria or fungi. Sources of resveratrol in food include the skin of grapes, blueberries, raspberries, mulberries, and peanuts

Hay fever. Using a nasal spray containing resveratrol three times daily for 4 weeks seems to reduce allergy symptoms in adults with seasonal allergies. Using a nasal spray containing resveratrol and beta-glucans three times daily for 2 months also seems to reduce allergy symptoms in children with seasonal allergies.
Obesity. Taking resveratrol by mouth seems to increase weight loss in overweight and obese adults. But it doesn't seem to improve blood pressure, glucose control, or levels of cholesterol and other fats.

Alzheimer's: It may protect nerve cells from damage and fight the plaque buildup that can lead to the disease.

Diabetes: Resveratrol helps prevent insulin resistance, a condition in which the body becomes less sensitive to the blood sugar-lowering hormone insulin. The condition can lead to diabetes.

When taken by mouth: People often consume resveratrol in small amounts in foods. Resveratrol supplements are possibly safe when taken by mouth in doses up to 1500 mg daily for up to 3 months. Higher doses of up to 2000-3000 mg daily have been used safely for 2-6 months. But these higher doses are more likely to cause stomach upset.

When applied to the skin: Resveratrol is possibly safe when used for up to 30 days.
When sprayed into the nose: Resveratrol is possibly safe when used for up to 4 weeks.

So far, studies have not discovered any severe ones, even when resveratrol is taken in large doses. When you get resveratrol in the amount naturally found in foods, it is generally considered safe. It could cause a reaction in those who are allergic to grapes or wine.

People who have health conditions like bleeding disorders should not take resveratrol without talking to a doctor first.

If you take any medicines or other supplements regularly, talk to your health care provider before you start using resveratrol supplements. They could interact with medicines like blood thinners, blood pressure drugs, cancer treatments, MAOI antidepressants, antiviral and antifungal medicines, NSAID painkillers, and supplements like St. John's wort, garlic, and ginkgo.