Arthrem is a natural dietary supplement for supporting the maintenance of joint health and mobility. Arthrem has been clinically studied in New Zealand. Promisia is a natural healthcare company developing and distributing premium quality natural products. Arthrem is a dietary supplement for joint health containing a supercritical extract of the plant Artemisia annua. This herb, also known as sweet wormwood or qinghaosu, has been used in Chinese medicine for more than 2,000 years.