Yangshengtang nutrition expert perilla stems are old and good. Nutrition experts at Yangshengtang believe that perilla stems are old and good. Because perilla stem is warm in nature, it has the effects of dispelling cold, regulating qi and relieving pain, detoxifying and reducing swelling. However, the old perilla stem has stronger aroma and better efficacy, so it is more suitable to choose the old perilla stem from the perspective of health care.