Propolis

Propolis is a mixture that honey bees produce by mixing saliva and beeswax with exudate gathered from tree buds, sap flows, or other botanical sources.

Also known as: Bee Glue; Bee Putty

examine.com

ConsumerLabs

Wikipedia

pubMed

https://medlineplus.gov/druginfo/natural/390.html

https://chriskresser.com/the-health-benefits-of-bee-products-with-carly-stein/