Dioscorea nipponica, Chuan Shan Long Dioscorea nipponica, Chuan Shan Long 穿山龙 Nippon Yam, Japanese Dioscorea, Japanese Yam Chuan Shan Long (TCM) Botanical name: Dioscorea nipponica, D. nipponica var. rosthornii Parts used: Rhizome Temperature & Taste: Neutral. Bitter. Slightly Toxic Classification: D. Clear Wind and Damp Uses: 1. Clears Wind-Damp, Relieve Pain:-Wind-Damp joint disease, especially with numbness-Arthritis, Rheumatoid Arthritis, Osteoarthritis-pain and numbness of the Lower Back and legs, Sciatica-stiffness and difficulty stretching and flexing-can be used for Hot or Cold types of Wind-Damp pain (commonly used for Heat-type)2. Move the Blood, Unblocks the Channels, Resolve Stasis:-Lumbar sprain-Chest pain, Rheumatic Endocarditis-Trauma, Bruising-Swollen sores, Toxic Ulcers3. Clears Phlegm-Heat, Stops Cough and Asthma:-Lung heat Cough, chronic Bronchitis, Asthma4. Resists Poison:-Malarial disorders-internally and applied topically to toxic sores, abscesses and swellings-foul, non-healing Ulcers5. Externally:i. tincture is applied to joint painii. decoction is used as a wash for toxic Sores and Swellings Dose: Decoction: 9–15 grams (up to 30 grams)Often used as a medicinal wine for Joint disease Main Combinations: 1. Joint Pain:i. Dioscorea nipponica Chuan Shan Long with Trachelospermum Luo Shi Teng, Lonicera stem Ren Dong Teng2. Heart disease:i. with Hawthorn (Shan Zha)ii. with Blood stasis, with Sophora Flos Huai Hua3. Chest pain, Dioscorea nipponica…

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