Homeopathy medicines are the best examples of the placebo effect. The common argument I often hear is that it worked for me in the past. Homeopathy people say it works slowly. It works slowly because you are giving your body enough time to cure itself. It works for some and some it doesn't work. Lot of people miss this basic logic.

Some other people believe in homeopathy because it's a herbal medicine. These two are completely different. The fundamental logic of how Homeopathy medicine is created is flawed. From Wiki, "Homeopathic preparations are termed remedies and are made using homeopathic dilution. In this process, the selected substance is repeatedly diluted until the final product is chemically indistinguishable from the diluent." If you know basic chemistry you will know that this doesn't make sense.