The Efficacy and Functions of Juniper
Generally speaking, juniper has various functions and effects, including promoting diuresis and reducing edema, relieving wind-damp, relieving the exterior and dispersing cold, relieving itching and inflammation, and alleviating pain. The specific details are as follows:

1. Promoting Diuresis and Reducing Edema: Juniper can promote water metabolism, increase urine output, and thereby effectively alleviate edema symptoms. This effect makes juniper particularly effective in treating edema caused by nephritis or other factors.
2. Relieving Wind-Damp: Juniper is warm in nature and acrid in taste, entering the liver and kidney meridians. It has the effect of dispelling wind and eliminating dampness. It can effectively relieve symptoms of arthritis and rheumatism, and also has certain therapeutic effects on sciatica and muscle pain. Applying externally as a decoction or powder made from juniper may assist in treating joint pain.
3. Relieving the Exterior and Dispelling Cold: Juniper has a certain diaphoretic effect and thus can relieve cold symptoms on the exterior. It helps alleviate discomfort such as fever and headache caused by common colds. Drinking juniper steeped in boiling water can enhance its effectiveness.
4. Relieving Itching and Inflammation: The volatile oil components contained in juniper leaves have anti-inflammatory properties that can reduce skin inflammatory responses, thereby relieving itching. Juniper can help alleviate itching caused by insect bites, eczema, and dermatitis. Fresh leaves can be crushed and applied externally to the affected area, but attention should be paid to monitoring for any allergic reactions.
5. Pain Relief: Certain compounds in juniper have local anesthetic effects, temporarily blocking nerve impulse conduction to achieve pain relief. It is suitable for mild to moderate acute and chronic pain, such as muscle aches and arthritis. Juniper can be taken orally or applied externally, and the specific method of use should be determined according to the condition and medical advice.
Before use, it is necessary to consult a doctor to ensure safe and proper application. Particularly for pregnant and lactating women, patients with hypertension, heart disease, and other populations, juniper should be used cautiously under medical guidance.