Add to Cart Resistance19 Pack $127.80 $95.95 The combination of elderberry, quercetin, Andrographis paniculata, Chinese Skullcap Root Extract and vitamin D provides a cornerstone of immune modifying support. Dr. Peter D’Adamo shares his go-to protocol with these four D'Adamo Personalized... The combination of elderberry, quercetin, Andrographis paniculata, Chinese Skullcap Root Extract and vitamin D provides a cornerstone of immune modifying support during these uncertain times. Add to Wish list