The term ‘alternative medicine’ is generally used to describe practices used independently or in place of conventional medicine. The term ‘complementary medicine’ is primarily used to describe practices used in conjunction with or to complement conventional medical treatments. NCCAM suggests “using aromatherapy therapy in which the scent of essential oils from flowers, herbs, and trees is inhaled in an attempt to promote health and well-being and to help lessen a patient’s discomfort following surgery”as an example of complementary medicine. The terms ‘integrative’ or ‘integrated medicine’ indicate combinations of conventional and alternative medical treatments which have some scientific proof of efficacy; such practices are viewed by advocates as the best examples of complementary medicine.