One of the most popular forms of alternative medicine, and one of the least plausible, according to skeptics, who generally attribute its results to placebo effects and consider it a poor substitute for medical care. Skeptics insist that, not only is homeopathy contrary to our knowledge of physics, chemistry, and biology, but it has never produced results which cannot be accounted for by the placebo effect.

Developed by Samuel Hahnemann, a German physician.