Cinnamon Heart Pu'erh Tea

Most of my patients know I'm nutso about Davids Tea. My fave right now is Cinnamon Heart Pu'erh. I had never heard of Pu'erh so I did some research. Apparently it is a wonder tea: it aids in digestion (as it is fermented), cleanses the blood and helps with weight loss. Some studies even say it decreases cholesterol.
I couldn't nail down how much caffeine it has in comparison to green or white tea though.... If it is similar to oolong in its oxidation it's possible that it is between black and green tea in caffeine content.