A Dietary Supplement Personal Radical Shield is the centerpiece of research scientists Durk Pearson & Sandy Shaw's life extension program. They say "If we could only take one thing, Personal Radical Shield is what we would take." Antioxidants, vitamins, minerals, and amino acids — 28 total nutrients — are conveniently contained in Personal Radical Shield capsules. Designed and used every day by Durk Pearson & Sandy Shaw, Personal Radical Shield represents the extensive research of hundreds of scientists. Many of the nutrients in this formulation are powerful antioxidants and free radical scavengers or are needed by your body to make protective compounds.