Sour pear, also known as Li Du pear and Litang pear, is a deciduous tree of Rosaceae, with a height of12m. Branchlets are spiny, the leaves are oval, 5-9 cm long, the leaves are coarsely serrated, the flowers are milky white and ochre, and the particle size is about 2 cm. The flowering period is from mid-late April to early May, and the fruit ripening period is from mid-late August to mid-September. Deciduous tree with small round fruit, astringent taste and edible. It is the main rootstock of grafted pear.

Efficacy:

1. Improve immunity: Vitamin C can protect cells, enhance the activity of white blood cells and antibodies, stimulate the body to produce interferon, destroy viruses and reduce the loss of white blood cells. An enzyme related to immune function in the form of minerals such as copper.

2. Replenish energy: It contains carbohydrates and can provide energy for the body quickly.

3. soothe the nerves and get rid of troubles: carbohydrates can supplement the glucose consumed by the brain and relieve fatigue, irritability, dizziness, insomnia, night sweats, inattention, forgetfulness, extreme thirst, depression, disorder and even hallucinations caused by insufficient glucose supply in the brain.

4. Reduce blood fat and blood pressure: make blood pressure easier to control, dilate capillaries, reduce blood viscosity and improve microcirculation. It can soften and protect blood vessels, and reduce human blood lipid and cholesterol. Eating regularly can prevent atherosclerosis or some cardiovascular diseases.

5. Eliminating phlegm and relieving cough: it is suitable for phlegm, phlegm and cough. It has a good moisturizing and physical therapy effect on the throat, which is conducive to the cure of local inflammation and can relieve local itching, thus blocking cough reflex. It can dilute the viscosity of respiratory tract inflammation and secretion, make it easy to cough up, and is beneficial to relieving cough and resolving phlegm.

6. Xiaoshi: it is helpful to the secretion of gastric acid and the digestion of food, and is suitable for the treatment of food retention syndrome.

7. diuresis and detumescence: it can eliminate toxins and excess water in the body, promote blood and water metabolism, and have diuretic and edema-eliminating effects. Contains diuretic ingredients, which can eliminate water and sodium retention in the body, promote diuresis and reduce swelling. Can be used for treating systemic edema, dysuria, etc.

8. Relaxation: Promote peristalsis of intestinal wall, help digestion and prevent dry stool. It can lubricate the intestines and stimulate defecation. Keep the feces in the intestine moist to facilitate defecation.