What are the functions and effects of Equisetum (Horsetail)?

　　Equisetum (Horsetail) is mild in nature and has a sweet and bitter taste. It generally possesses various functions and benefits, including improving respiratory diseases, reducing inflammation and inhibiting bacterial growth, promoting diuresis and reducing edema, improving vision and removing corneal opacity, clearing heat and detoxifying. Detailed analysis is as follows:

　　1. Improving Respiratory Diseases

　　Equisetum has certain expectorant and anti-asthmatic effects and provides auxiliary treatment for respiratory conditions such as cough and asthma. It can alleviate symptoms and promote respiratory health.

　　2. Reducing Inflammation and Inhibiting Bacteria

　　Equisetum has anti-inflammatory properties and effectively inhibits various pathogenic bacteria, including Staphylococcus aureus, Escherichia coli, Bacillus anthracis, and Shigella. This characteristic makes Equisetum important in treating bacterial infection-related inflammatory conditions. Additionally, through its anti-inflammatory and antibacterial effects, Equisetum can help improve the body's immunity and enhance resistance to diseases.

　　3. Promoting Diuresis and Reducing Edema

　　The potassium salts contained in Equisetum facilitate the excretion of bodily fluids, providing a strong diuretic effect that can eliminate limb edema caused by fluid retention. It has certain auxiliary therapeutic effects on conditions such as nephritis and edema.

　　4. Improving Vision and Removing Corneal Opacity

　　Equisetum enters the liver and gallbladder meridians, helping to dispel wind-heat from the blood in these meridians, thereby improving blood circulation to the eyes and achieving the effect of removing corneal opacity and enhancing vision. Equisetum is particularly effective for symptoms such as redness and swelling of the eyes, tearing in the wind, and corneal opacity caused by wind-heat or liver fire rising upward. When combined with semen Oryzae (Grass Seed) and cicada slough, Equisetum also shows good therapeutic effects on symptoms such as conjunctival congestion and eye pain caused by upward attack of wind-heat.

　　5. Clearing Heat and Detoxifying

　　Equisetum contains abundant flavonoids, which have antioxidant and anti-inflammatory properties. These components can scavenge free radicals in the body, reduce inflammatory responses, and provide significant relief for conditions caused by heat toxicity.

At the same time, maintaining a healthy lifestyle, improving dietary habits, engaging in appropriate physical exercise, and enhancing physical fitness are important for reducing the risk of disease.