After having been taking a more pure (98%) form of resveratrol for a few weeks now, I could not help but notice that I am starting to enjoy a tendonitis-like side effect. I read about it here and there before I experienced anything personally. Now, weighing what resveratrol offers against its apparent after-effect, I've decided not to cease taking the supplement for the time being. So, barring that option, I'm seeking a solution.
What leaps to mind is to try counter-supplementing copper, or zinc, or whatever is in fact being affected. And here is where my lack of expertise comes in. Would supplementing zinc / copper fix the problem, or at least probably help? Which one? How much? At the same time I take resveratrol? Or eight hours after? Eight hours before?
If it matters, I take a multivitamin once per day, and it claims to provide 73% RDV of zinc and 45% RDV of copper. Sometimes I take it with the resveratrol, and sometimes I take it 12 hours separated. (Mainly because it's difficult to juggle resveratrol, astral fruit, and all the supplements which apparently negate the efficacy of those two.)
Anyway, that's where I'm at now. Any help appreciated!
We don't really have a definitive explanation for the tendon pain some people report when taking resveratrol. We do know that the amount of chelation induced by resveratrol is negligible, and this has been discounted as a possible cause of tendinitis-like symptoms. The effect on copper that was seen
in vitro was in cell cultures exposed to resveratrol concentrations orders of magnitude greater than can be attained in the body from oral administration of resveratrol. Not a credible cause.
Another theory is that such symptoms are due to resveratrol's anti-angiogenesis effect. which is good for suppressing tumors, but doesn't allow tendons and muscles a chance to heal because it suppresses the growth of blood vessels that would induce healing. This is only speculation, but whatever the cause, you could try taking a two day break from resveratrol periodically, say once a week. That could allow sufficient healing to occur, or possibly to alleviate the pain from whatever the cause.
Another possibility: geddarkstorm posted a wonderfully clever and credible theory which implies resveratrol works in part by increasing the NAD+/NADH ratio. Perhaps you are not getting sufficient niacin or niacinamide as a precursor to manufacture NAD+, and the tendon pain is the result. Geddarkstory recommended taking niacinamide, I think 250 mg would be plenty, but three hours after taking resverarol. This is enought of a delay it wouldn't block resveratrol's effects on sirtuin genes, but would provide a source for NAD+.
I hope you can report back to us what works or not if you try these suggestions. We could use more data.