Bee Propolis Extract by Natural Factors $24.29 90 Capsules - $24.29 Size 90 Capsules 1 2 3 4 5 6 7 8 9 10+ Quantity Quantity Add to cart Propolis is a gummy substance made by bees. They combine it with beeswax to fortify and sterilize their hives. Propolis has been traditionally used for centuries as support for the immune system.*