Thank you for your review Sandra! Andrographis Complex is one of our best immune support formulas. Andrographis is a Chinese herb great for bolstering the immune system in acute situations. This formula also contains Echinacea, which keeps the innate immune system on full alert. The 3rd herb is Holy Basil, which brings a harmonious balance to all 3. We appreciate your recommendation and your trust in the Natural Health Improvement Center!