Native American Medicine
The Inca were doing successful brain surgery over 3 centuries before the Europeans. The Iroquois taught the French their pine needle cure for scurvy in the 16th century -- 200 years before Britain discovered a lime cure. The Iroquois cure is 5 times stronger.
In the 17th century, quinine (derived from the chinchona tree in Peru) cured Europe of malaria. One of the greatest breakthroughs in 20th century medicine came from a preparation derived from curare that revolutionized the practice of anaesthesiology. Curare made possible the open heart, organ transplant, and hundreds of other surgeries now performed daily in hospitals around the world.
In the 21st century, western medicine is beginning to be revolutionized by the science of the shamans as shown in The Shaman and Ayahuasca: Journeys to Sacred Realms which can be seen in Instant View.