Phyto Shield 63c by Douglas LabsPhyto Shield, provided by Douglas Laboratories, contains significant amounts of several key nutrients including echinacea and zinc, specially formulated to aid in immune support. Phyto Shield may be a useful dietary supplement for individuals wishing to supplement their diet with nutrients that can aid in immune support. These statements have not been evaluated by the Food and Drug Administration (FDA). These products are not meant to diagnose, treat