Galen: Doctor to the Gladiators
Galen developed herbal medicine to a heighth that dominated Western Herbalism for hundreds of years. Unfortunately, it became fragmented and lost for the most part during the middle ages. Fortunately, it moved to the Middle East where it was preserved and developed further into what's called Tibb Unani (still around today). Today, herbalists recommend studying the works of Galen and his contemporaries to gain a better understanding of Western Herbalism and to recover much of what has been lost.
Watch this while you can, several times its been removed and I had to locate another copy. Let me know if it doesn't work. Below is the previous location (not working) and I don't know how to delete it ! Just ignore...but don't delay in watching this documentary.