Andrographis paniculata, also known as kalmegh in Ayurvedic medicine, is a flowering plant native to India and Sri Lanka. The leaves and stems of andrographis have been used in traditional Asian medicine for centuries. Some of its traditional uses include helping with diabetes, dysentery, flu & cold infections, bronchitis, and digestive issues. Clinical research confirms that andrographis has a number of beneficial properties, including anti-diabetic, anti-inflammatory, antiviral, and immunostimulatory activities. Today andrographis is particularly popular in Sweden and other Scandinavian countries for fighting off cold & flu infections. The precise mechanisms behind the immunity benefits of andrographis are not yet known. However scientific studies demonstrating, increased macrophage & natural killer cell activity, enhanced production of antigens to counter harmful microbes and improved phagocytosis. Andrographolide, the main active ingredient of andrographis, has been shown to disrupt viruses by interfering with their replication. Andrographis supplements are used to support overall immune function, which includes fighting off colds, influenza, and other acute respiratory infections. There is significant amount of research evidence to back these uses, so much so that andrographis extracts have become a common method for protecting against cold and flu infections in Sweden and other Scandinavian countries.
Research and a long history of use have proven andrographis to be highly effective for helping with seasonal cold and flu infections, which is the main reason most people take immune system boosters