Homeopathy (Listeni) is a system of alternative medicine created in 1796 by Samuel Hahnemann based on his doctrine of like cures like (similia similibus curentur), a claim that a substance that causes the symptoms of a disease in healthy people would cure similar symptoms in sick people. Large-scale studies have found homeopathic preparations to be no more effective than a placebo, suggesting that positive feelings after taking homeopathic medicines are due to the placebo effect and normal recovery from illness. Homeopathy is a pseudoscience