There are many treatments that where both proven true and false in the advent of science.
Pharmacology has its bases in herbal remedies that where proven to be true. Eating/use of moldy bread to stop infections. a.k.a Penicillanic. Or drinking the broth made from boiled White Willow Bark to relive pain. a.k.a Aspirin. (Later through science found to be the white powdery substance in the inner bark of the White Willow's bark.) Ever noticed the woodies flavor of real Aspirin?
Many modern medicines and treatments are based off of what the 'Common Folk' knew and some, true, from some of the Ruling Classes from around the world.
If it works in low doses, concentrate it for faster, stronger results. The Good, Bad and Ugly of science and its effect on Pharmacology and health... or lack there-of. There is a lot of 'Snake Oil' out there, even today.