Not yet investigated
What we have so far
Both water- and fat-soluble, which is unusual and is why it is sold as the 'universal' antioxidant.
This star is on the map because the show intends to take the question apart properly — the trials, how it is actually tested, whether the thing sold is the thing studied. That work is not done yet, and nothing here should be read as a conclusion. When the investigation is published it will appear on this page.