If one can get on Grape Seed Ex it's just a huge icing on it all...if not the other 3 are important and breath, breath., breath. Just hearing news out of Mexico City via NPR, more and more and dying since they can't get their oxygen tanks filled, and these countries for the MOST do not take supplements...the U.S. I have to venture to say are the biggest takers of supplements...Many countries in the world cannot afford supplements for a big one.

From day 1 of all this covid, the respiratory system was discussed, and as we know all the use of ventilators and oxygen tanks, omg.

I have posted about grape seed extract for so much from asthma, copd and more issues and it's true, you can find info about all these respiratory issues and grape seed ex...Vit C is important and Grape Seed Ex is 50 times more powerful than C....D is critical too, so be on top of it....

Keep a healthy immune system.,

Where do these numbers come from? The details are important in both science and evidence-based medicine.

One place that gives that info....
[Abstract

Grape seeds are waste products of the winery and grape juice industry. These seeds contain lipid, protein, carbohydrates, and 5-8% polyphenols depending on the variety. Polyphenols in grape seeds are mainly flavonoids, including gallic acid, the monomeric flavan-3-ols catechin, epicatechin, gallocatechin, epigallocatechin, and epicatechin 3-O-gallate, and procyanidin dimers, trimers, and more highly polymerized procyanidins. Grape seed extract is known as a powerful antioxidant that protects the body from premature aging, disease, and decay. Grape seeds contains mainly phenols such as proanthocyanidins (oligomeric proanthocyanidins). Scientific studies have shown that the antioxidant power of proanthocyanidins is 20 times greater than vitamin E and 50 times greater than vitamin C. Extensive research suggests that grape seed extract is beneficial in many areas of health because of its antioxidant effect to bond with collagen, promoting youthful skin, cell health, elasticity, and flexibility. Other studies have shown that proanthocyanidins help to protect the body from sun damage, to improve vision, to improve flexibility in joints, arteries, and body tissues such as the heart, and to improve blood circulation by strengthening capillaries, arteries, and veins. The most abundant phenolic compounds isolated from grape seed are catechins, epicatechin, procyanidin, and some dimers and trimers.]
Polyphenolics in grape seeds-biochemistry and functionality - PubMed

This on OPC's has been posted in the Vitamin section for some time.

OPC: Frequently Asked Questions | OPC Antioxidant Reference Guide

Since I posted this it's come to me that Quercetin 500mg is best taken to make sure the Zinc is going into the body's cells from the bloodstream.