"Human clinical trials to test the efficacy of the patented supplement on a range of health outcomes, including arterial function, lipid metabolism and inflammation, will start in late 2025, and there are hopes that the supplement will be available sometime within the next two years."
I went to USPTO and could find no patents containing "plasmalogen." Interestingly, the Juvenescence web site says they are evaluating plasmalogen for treating Alzheimer's Disease: "Brain penetrant plasmalogen precursor targeting a core driver of neurodegeneration."
The supplement may be Fruit Loops.