People with deficiency cold and stomach cold and people with yang deficiency are not suitable for eating Dendrobium candidum. Don't eat Dendrobium candidum when you have a cold, because it will delay the recovery of a cold. Dendrobium candidum can nourish yin and stomach and treat thirst. Many people now take it as an immune enhancer. You can go to Taobao, a regular online shopping website. Dendrobium candidum, such as Changhong, has been good for more than 20 years.