Standardized Boswellia Extract. Plus Turmeric Root Extract. NOW Boswellia Extract is a standardized extract of Boswellia serrata, also known as Frankincense, a resinous botanical that has been traditionally used by Ayurvedic herbalists for centuries. The bioactive constituents of Boswellia, Boswellic Acids, have been shown in scientific studies to affect key enzymes involved in the maintenance of healthy tissues. Through these mechanisms, Boswellia may help to naturally support the immune system’s balanced response to normal internal metabolic stress, as well as to the typical wear and tear of everyday life.