Healthvit Resveratrol 100MG with Grape Seed Extract | 60 Capsules. Healthvit Resveratrol 100mg Grape Seed Ext Resveratrol is a powerful antioxidant that is produced by some plants to protect against environmental stresses. Perhaps the most notable producer of resveratrol is the grapevine, which produces large amounts of resveratrol in the skins of grapes to protect against fungal diseases and sun damage. It is therefore no surprise that wine ( In particular red wine – which is fermented with grape skins ) has some of the highest levels of resveratrol out of any natural food. grape seed extract is beneficial for a number of cardiovascular conditions. Grape seed extract may help with a type of poor circulation ( chronic venous insufficiency ) and high cholesterol. Grape seed extract also reduces swelling caused by injury and helps with eye disease related to diabetes.