A Swiss biotech company is putting a new longevity supplement to the test, and the latest clinical results are promising. The oral antioxidant is "an attractive option to alter immune aging," according to researchers at the company Amazentis SA in collaboration with an international team of scientists. Not only has the supplement been found to be well-tolerated and safe for daily use, a new clinical trial also shows potential benefits for rejuvenating the immune system. More research is needed