Those with a weak, inefficient or overactive immune system frequently do not tolerate certain antiviral remedies that seem to work well for people whose immune system functions properly, with Echinacea being one example. However, while herbs such as Echinacea may be helpful for the Common Cold or Flu when used by individuals with a normal immune system, they tend to overstimulate the immune system even in healthy individuals as a result of cytokines - regulatory cell proteins such as lymphokines and interleukins - being ineffective against a Pandemic Virus. This is one reason why many younger, seemingly healthy individuals die during a pandemic flu... Full Text