Is Coryza Forte from Progressive Laboratories, which is a mix of vitamins, bioflavonoids and extract of Echinacea purpurea, effective enough as an antiviral to merit inclusion in our Antiviral Regimen?

We do not see this as being effective enough to warrant inclusion. There are benefits of Echinacea in treating symptoms of viral illness, but that is not providing a causal correction but only symptomatic support. It is helpful to the sufferer, but the Antiviral Regimen is intended to be a prophylactic tool for preventing viral illness in the first place, and for that, it must counter viral growth, replication, and invasion of the cells of the body.