In europe this substance was used to strengthen the blood vessels.
The flavonoid, the main component of propolis, has a powerful effect to eliminate odors. The propolis accelerates the action of Urine Therapy. For example in case of hardening of shoulders, UT could only give a favorable result in two or three months, but when we associate with propolis obtained the same result from three to seven days.
As for the treatment of liver diseases, propolis alone has not important effectiveness.
The propolis of honeycomb inhibits the reproduction of cancer cells.
These are some extracts from Dr. Kyoichi Nakao's Urine therapy book.