I took vitamin E since many years, it didn't reduce my Pois.
Thanks for sharing your experience. There are 8 forms of natural vitamin E that are listed in the post above. If you will, could you specify which form of E you supplemented and whether it was prepack or daily? I think that information would be really beneficial to the POIS community. alpha-tocopherol is the most common form of vitamin E sold in stores and online, and it's IC50 values show that it is not an anti-inflammatory.
Only one of the forms, alpha-tocotrienol, is shown to be neuroprotective at low concentration. The IC50 values listed for alpha-tocotrienol indicates that (in the brain) it is a stronger anti-inflammatory than of all the supplements listed in the original post.
If you can't recall the form you took, your feedback is still helpful. I may not have explained clearly the importance/distinction of the alpha-tocotrienol form in the above post on E. In any case, I will be delighted to hear from anyone about experiences with supplementing the different tocotrienol versions of vitamin E.
Very informative post, Nanna, thanks for your precision on the exact form of vitamine E that has a high potential of being beneficial in POIS.
Neuroprotection abilities, for me, are very interesting in POIS, since neurotoxicity through kynurenine pathways activation ( through IDO/TDO upregulation), leading to neurotoxic products, is part of my hypothesis about POIS CNS/brain symptoms, ( cognitive and emotional symptoms).
I think that the natural supplement companies in general are not there yet with alpha-tocotrienol. Most will list only tocopherols, and some will list tocotrienol as a whole, not detailing the concentration of the four different forms. I have found one preparation listing all 8 forms of vitamin E, and there are 5.38 mg of alpha-tocotrienol in it ( see
https://www.vitacost.com/vitacost-vitamin-e-tocotrienol-complex ).
I read in another post that you have started taking alpha-tocotrienol. Did you find a specialized supplement with mainly alpha-tocotrienol, or a complex of tocotrienols, or a Vit E complex containing alpha-tocotrienol? Could be interesting to share the dosage of alpha-tocotrienol in the preparation you take ( and, maybe, a link to this preparation).
One of the best dietary source of alpha-tocotrienol seems to be palm oil (
https://en.wikipedia.org/wiki/Tocotrienol#Sources )
I also stumble upon a tocotrienol education site:
http://tocotrienol.org/en/ . However, this site appears to give information on tocotrienol in general, and not specifically on alpha-tocotrienol.
P.S. After some more search, it seems that most, if not all, tocotrienol supplements uses the proprietary complexes of the EVNol serie, from a company named ExcelVite (
http://www.excelvite.com/products/evnol-palm-tocotrienol-complex/ ). They mainly uses palm oil as a source, and they have 6 different versions of their EVNol complex. The informational site that I have mentioned above,
http://tocotrienol.org/en/ , have been created by ExcelVite ( but they have refrained to put any commercial link on this education site and really focus on the research results, which is good - their name only appear in the "contact" section.)