Feb 21, 2023 (Commentary by Dr. Peter McCullough)
https://www.mdpi.com/1420-3049/27/17/5405
Nattokinase is an enzyme produced by fermenting soybeans with bacteria Bacillus subtilis var. natto and has been available as an oral supplement. It degrades fibrinogen, factor VII, cytokines, and factor VIII and has been studied for its cardiovascular benefits. Out of all the available therapies I have used in my practice and among all the proposed detoxification agents, I believe nattokinase and related peptides hold the greatest promise for [spike injured] patients at this time.
… Tanikawa et al examined the effect of nattokinase on the Spike protein of SARS-CoV-2. In the first experiment they demonstrated that Spike was degraded in a time and dose dependent manner in a cell lysate preparation that could be analogous to a vaccine recipient. The second experiment demonstrated that nattokinase degraded the Spike protein in SARS-CoV-2 infected cells. This reproduced a similar study done by Oba and colleagues in 2021.