Andrographis is an herb with a demonstrated ability to reduce discomfort and symptoms of upper respiratory tract infection (i.e., nasal discharge, cough, and expectoration, as well as fatigue, cough and throat symptoms). Part of the herb's impact on the respiratory tract is due to its immunostimulant activity--it stimulates an immune response. It is also known to be a “drying” herb in traditional medicine systems.
Feverfew is an herb that promotes cytokine balance (the interaction between the brain and the immune system). Feverfew reduces head tension, as well as reduces sensitivities to triggers like light and noise.