Resveratrol FAQ & Resource Center

Resveratrol studies are currently being conducted around the world but there is very little documented information from human studies to be found.  I intend to do my best to find their results and put them on this page when possible.  In the mean time I will list what I feel are relevant (of non-commercial interest in most cases) links about resveratrol and related topics. 

If you have any additional links please feel free to add them in the comments section below or email them to me and I will add them to the FAQ.  This page will continue to be a work in progress...

last updated on August 11th, 2008

Why we are all here:  What is resveratrol or trans-resveratrol?:

http://en.wikipedia.org/wiki/Resveratrol
http://www.lef.org/resveratrol/
http://www.ansci.cornell.edu/courses/as625/2005term/Lena/Resveratrol/Resveratrol.html
http://www.mdidea.com/products/herbextract/resveratrol/data.html

Click on the subject title to be taken to the FAQ & link page:

Sirtuin & SIRT1

Bioavailability & Pharmacokinetics: What is it and why it's important!

Resveratrol Forums, Communities, and blogs

Resveratrol & Cholesterol (added 8/11/08)

Resveratrol & Endurance

Resveratrol & Calorie Restriction

Comments

[jose carr]

i ordered resvertrol capsules. pretty expensive. curbed appetite and horrid constipation turning stools into rock hard consistency. people should be wrned about astringent properties of this product as it might contain tannins from the skins of grapes. could cause intestinal obstruction especially in people who tend to be constipated.

[jose carr]

emaciated skinny people should be warned that resveratrol decreases appetite thereby causing nutritional problems. also the astringent properties exprienced by the writer. using this product, rock like stools which had to be treated with wetting agents and metamucyl and other mild laxatives

[Admin]

Hi Jose,

Thanks for stopping by and adding your thoughts. I'd like to mention that supplements using grape skins for their resveratrol source would most likely not contain a large amount of resveratrol. Most quality resveratrol supplements are produced using polygonum cupsidatum, a weed grown in numerous areas of the world. This weed does not contain tannins.

I would also agree with you that emaciated skinny people should not be taking this kind of resveratrol supplement. Further I would think any supplement that potentially increases metabolism should be avoided. This type of person should also seek the help of a medical professional to determine a proper diet including foods, vitamins, and any other nutrient they are currently lacking.

[Kitty Piekarz]

Hi Jose:
I would just like to tell you that I started taking a resveratrol supplement made from polygonum cupsidatum (100mg). The supplement also contained a little calcium and chlorophyll (of all things). Not only did it severely cut my appetite but it gave me the rock-like stools as well. You are the only other person I have found that has owned up to this reaction. My normal constitution is as right-as-rain and I can honestly say that I do not suffer from constipation. I had no choice but to discontinue immediately. It took a week for my normal GI function to return. I would say that was a severe adverse reaction, the kind that colon cancer patients experience. I wish I knew what in the heck happened. Are we the only 2 people who can't take resveratrol?

[Admin]

Hi Kitty,
Thanks for sharing your experience with people. Resveratrol, or any supplement for that matter, can react differently for each user. Some people have absolutely no side effects whatsoever while there are those who simply have too many they must stop taking the product.

My only suggestion would be to try another brand if you really want to take resveratrol. This way you can at least rule out it being from a bad product.

[dresden]

I started taking this product because I was told that it was useful for the prevention of cancer, that it switched off "bad" genes. I have been taking it for 4 days and have noticed that my extremely regular period is heading into its second day of being late. I read that there is some implication that resveratrol impacts estrogen. But I'm unsure about this.

I have also noticed increased energy and happier mood, so I wish there were no side effects. But it seems dangerous to play with hormones -- and in the name of longevity?

[k]

I found this thread through a google search for resveratrol and constipation. I am receiving the same effects as a few of the other posters. Rock hard stools, extreme loss of appetite, and pain every time I eat. I have been taking 100mg polygonum cupsidatum and will be discontinuing it now. I hope the symptoms go away quickly. I have been miserable for a month thinking it was some type of ulcer or stomach virus. I did not even think to connect the start of my taking this with resveratrol.