Complementary and alternative therapies are practices and products that are traditionally outside the realm of conventional medicine, but are more natural and economical than traditional pharmacotherapy, sometimes with fewer side effects [861]. They include, but are not limited to, acupuncture, dietary and nutritional supplements, and herbal remedies. Research has indicated that there has been an increase in the use of complementary and alternative therapies, particularly among people seeking to treat their depression or anxiety, often in combination with conventional medication [862]. The use of complementary and alternative therapies may be rising in popularity due to their ability to fill a major gap in mental health service delivery, particularly in areas with reduced rates of services [863].
It is beyond the scope of these Guidelines to provide an extensive and comprehensive list of available complementary and alternative therapies; however, attention is drawn to some promising interventions for which there is emerging evidence (see Chapter B7).