Nature's Way specializes in high-quality herb extracts and are an important brand to remember when shopping for a good herbal product. That's especially true with specialized and hard-to-source herbs like Andrographis. Andrographis has been and continues to be extensively studied for its many potential therapeutic applications. Most people using andrographis now do so for immune support when facing a serious health challenges, but it's also used to help speed resolution of minor illnesses like colds and flu.