Pycnogenol can also boost nitric oxide, but it has a binary method of doing it. At one dose (and I forget the dose, it was low though) it does not, but at high dose it does. If you know you react badly to resverotrol, then you will probably react badly to pycnogenol. So it could cause vasodilation I suspect, which is bad if you have severe OI. However, both of these inhibit NFkB so that should also reduce inflammation. The problem is inflammation is not one mechanism, its many. It depends on what kind of inflammation is the issue, I suspect.
Bye, Alex
Exactly, Alex! Different mechanisms of inflammation exist. This didn't even feel inflammatory in the sense of being "hot," but as best I can recall, more like a stinging pin-pricky feeling throughout the veins/arteries. Thought for sure it was some kind of NO radical, but of course it's all just speculation as to what really happened.
Interestingly I had a similar reaction, but felt more nerve-based rather than vascular, from green tea one time. Not really sure what that one was, either, something related to xanthine oxidase, I thought at the time, a really painful and agonizing kind of burning/stinging effect throughout my neck and upper spinal area, at the top of my back. To me that plus the resveratrol episode suggested to me that the anti-oxidant system was really messed up.
I drink green tea now in small amounts though, and it seems fine. I can take pycnogenol w/out those kinds of effects, too, although I don't tend to b/c I have a gastric ulcer and pyc *really* burns it. But just goes to show that sometimes these supps can have different effects not only in different people, but in the same people at different times. And regardless also if they are "anti-oxidants" or not. Had bad effects from a lot of anti-oxidants, actually, including a lot of more exotic stuff like astaxanthin. That one messed up my immunity, as I recall - have had so many adverse reactions to stuff it's hard to keep them all straight, lol.