Alternative medicine, also called complementary medicine, is the term for all kinds of treatment and therapy which do not fall under the category of traditional medicine. These may be performed by physicians or practitioners of natural medicine. The latter do not belong to acknowledged service providers according to legal regulations. Thus, basic health insurance will not cover arising costs. However, should treatment be performed by a physician with proof of additional training in that area, basic health insurance will cover costs for certain treatments. There are supplementary health insurance products which cover medication on the list of complementary medicine (CML).