The "Law of Similars," also known as the Law of Similars in Homeopathy, is a principle that suggests substances causing symptoms in healthy individuals can be used to treat similar symptoms in sick individuals. This concept is foundational in homeopathic medicine, where practitioners believe that a remedy's ability to produce symptoms in a healthy person can help cure those same symptoms in someone who is ill. For example, if a person experiences a runny nose and sneezing from a cold, a homeopathic remedy made from a substance that causes similar symptoms in a healthy person may be prescribed. This approach contrasts with conventional medicine, which typically uses opposites to treat symptoms.