Homoeopathy is based on the principle, Let likes cure likes. People from Cologne know this principle from Carnival. A lot of revellers swear
on fighting a hang-over with Kölsch, the local beer. The success may be doubted. In contrast to homoeopathy.
The following example illustrates the idea: The onion. In the kitchen is causes teary eyes and a running nose. Exactly against these symptoms it is effective, when given as homoeopathic remedy. Allium cepa, the technical term for onion, aides with colds, hay fever, or inflamed nose. Used correctly, homoeopathy is free from any side effects.