Commonly referred to as Bee Glue, this natural substance is collected by worker bees from the resin of select trees, and used to line their hives. With its high bioflavonoid content and immune supporting compounds, propolis has been used for centuries and may help in caring for minor wounds, boosting immunity and softening the skin. When taken as part of a healthy diet and lifestyle, NOW 500 mg Propolis is a versatile supplement rich in a number of essential nutrients.