Use: externally and internally [500 mg. one to 3 times per day.
Excellent for wounds, throat pain, herpes, gum inflammation
Protects against viruses when the immune system is weak and in the elderly.
May protect against colon cancer.[Brazilian propolis]

Caffeic acid phenethyl ester (CAPE), a natural polyphenolic substance, is one of the main components of propolis and may have wide applications.
CAPE exhibits antioxidant, anti-inflammatory, antiproliferative, cytostatic, antiviral, antibacterial, antifungal, and, most importantly, antineoplastic properties.
Propolis may inhibit Helicobacter pylori, implicated in many gastric ulcers.
Huge literature is available about propolis.

https://greenmedinfo.com/substance/bee-propolis