What dose to take? From “Sweep Away Senile Cells” of the Life Extension Foundation. How Quercetin deletes senescent or aged cells and combats aging at the cellular level. Quercetin slows cardiovascular aging, metabolic syndrome, helps a senile immune system, osteoarthritis, Parkinson’s, Alzheimer’s, COPD, NAFLD, brain aging, toxic damage, herpes (HSV-1), and more.