Natural Factors Bee Propolis Extract 500 mg Supports a Healthy Immune System 90 capsules 90 servings

Propolis is a type of glue made by bees from the resins of trees, such as poplar, birch and horse chestnut. Bees gather the resins, mix it with a nectar they secrete, and take it back to the hive where it is used to sterilize the hive and seal it from invaders. Bee propolis decontaminates the hive, making the vulnerable bees resistant to viruses and bacteria that could cause infection and disease in the hive. They combine it with beeswax to fortify and sterilize their hives. Propolis has been traditionally used for centuries to support human health.