(1) Benefiting stomach and producing sperm:

This taste is sweet, slightly cold, enters the stomach meridian, is good at nourishing stomach yin, promoting fluid production to quench thirst and clearing stomach heat. It can be used to treat fever, body fluid injury, polydipsia, and dry tongue with black fur after being mixed with corresponding traditional Chinese medicines. Yin deficiency due to stomach heat, dull pain or burning pain in epigastrium; After yin deficiency and body fluid deficiency, nourishing yin and clearing heat, etc.

(2) Nourishing yin and clearing heat:

This product belongs to stomach meridian and liver meridian, and can nourish kidney yin and reduce deficiency fire. It is suitable for deficiency of kidney yin, such as dim eyes, flaccidity and weakness of bones and muscles, hyperactivity of fire due to yin deficiency, and asthenia of bone steaming. According to different diseases, we should use corresponding traditional Chinese medicine.

(3) Effect of treating cataract:

Dendrobium can inhibit or correct the abnormal changes of enzyme activity caused by galactose, and also prevent or correct the imbalance of total lipid and total cholesterol in lens caused by galactose cataract.

(4) Anti-aging:

Dendrobium has anti-aging effect in the body. On the one hand, it can promote the proliferation of spleen lymphocytes by enhancing the activity of antioxidant enzymes in blood, on the other hand, it can inhibit the release of proinflammatory factors and signal nuclear factor (NF-KB) pathways, thus achieving the effects of anti-aging, promoting immunity and inhibiting inflammation.

(5) Anti-tumor:

Many chemical constituents, such as alkaloids, polysaccharides, sesquiterpenes, phenanthrene and biphenyl, were isolated and identified from Dendrobium. Most of these chemical constituents have anti-tumor and auxiliary anti-tumor pharmacological effects. Therefore, Dendrobium can kill some cells of malignant tumors such as lung cancer, ovarian cancer and promyelocytic leukemia, and has strong anti-tumor activity. Clinical application in the adjuvant treatment of malignant tumor can improve the symptoms of tumor patients, reduce the side effects of radiotherapy and chemotherapy, enhance immunity, improve the quality of life and prolong the survival period.

(6) Tonifying the spleen and stomach:

Dendrobium has anti-aging effect in the body. On the one hand, it can promote the proliferation of spleen lymphocytes by enhancing the activity of antioxidant enzymes in blood, on the other hand, it can inhibit the release of proinflammatory factors and signal nuclear factor (NF-KB) pathways, thus achieving the effects of anti-aging, promoting immunity and inhibiting inflammation.

(7) Enhance immune function:

Dendrobium is rich in polysaccharides, which can promote lymphocyte division and enhance immune function. Modern pharmacological research also shows that Dendrobium can improve stress ability and has good anti-fatigue and anti-hypoxia effects.

(8) Reduce blood lipid:

The effective components of Dendrobium polysaccharide, alkaloids, quinones, biphenyls and fluorenes are synchronously regulated through multiple channels and multiple links, which can improve the activity of superoxide dismutase (SOD) and the content of hydrogen monoxide (NO), effectively scavenge free radicals and reduce lipid peroxidation products, thus improving the function of vascular endothelium, providing antioxidant capacity for the body and achieving the effect of reducing blood lipid.

(9) Lowering blood pressure:

The experiment shows that the ethanol extract of Dendrobium with different concentrations has certain antihypertensive effect in a certain range, and the antihypertensive effect becomes more and more obvious with the increase of concentration in a certain range. However, whether the specific substances in Dendrobium alcohol extract have certain antihypertensive effect needs further study.

(10) Lowering blood sugar:

On the one hand, Dendrobium can reduce the damage of free radicals to islet function, increase the release and synthesis of insulin by islet β cells or increase insulin activity through antioxidation; On the other hand, it may be related to the increase of the quality and quantity of insulin receptors in aggregated cells. Although the specific function needs further study, it can be proved that Dendrobium has a certain hypoglycemic effect.

2. Taboo of Dendrobium candidum

(1) It is forbidden for yin deficiency and yang hyperactivity.

Dendrobium candidum has the characteristics of nourishing yin and clearing heat, and its nature is slightly cold. Therefore, people with yin and yang deficiency are not suitable for eating Dendrobium. In particular, people with cold stomach and heavy humidity need to be prohibited from taking it.

(2) Children should use it with caution.

Children and young adults are full of healthy qi, and these people are not allowed to eat Dendrobium except for yin deficiency caused by excessive basic nutrition and improper lifestyle.

(3) Women should use it with caution during pregnancy and menstruation.

Pregnant women are a special group. In order to ensure the health of the fetus during pregnancy, it is recommended to take less medicine. It is generally not recommended to eat Dendrobium unless it is to improve immunity and obtain the consent of the doctor. It is also not recommended for menstrual women to eat Dendrobium candidum.

(4) Don't use it at the beginning of a cold.

Dendrobium candidum can restrain pathogenic factors, and warm diseases should not be used early, such as the early stage of a cold. Because eating Dendrobium candidum is not conducive to expelling evil spirits, it is counterproductive.

(5) Don't eat with radish and mung bean.

Radish has the function of relaxing bowels and ventilation. Eating Dendrobium candidum and radish will affect the absorption of effective components in the intestine, and it will not achieve the effect of disease prevention and health care. Mung beans can inhibit the efficacy of Dendrobium candidum and cannot be eaten together.