Since ancient times, the leaves of the blackberry plant have been used curatively, especially throughout Europe and Asia.

For example, two thousand years ago, the roman army doctor Galenos had his soldiers chew blackberry leaves to strengthen gums and build up physical resistance; today, we know it was the vitamin C and tannins in the leaves that he was counting on to boost immunity and heal wounds.

It is also reported to be helpful in reducing blood sugar levels and is a good source of the vitamins C and E and the mineral, selenium.