Sang Ji Sheng

What is Sang Ji Sheng?

Sang Ji Sheng is a semi-parasitic herb harvested from the branches of mulberry trees and other hardwood hosts across southern China and Southeast Asia. It has been a cornerstone of Traditional Chinese Medicine since at least the Han Dynasty, documented in the Shennong Bencao Jing, one of the oldest Chinese herbal texts. The herb is classified in TCM as tonifying the Liver and Kidney, expelling wind-dampness, and calming the fetus.

How does Sang Ji Sheng work?

Sang Ji Sheng works through several overlapping mechanisms: its flavonoids — particularly quercetin, hyperoside, and avicularin — help relax blood vessel walls and support healthy blood pressure. Its anti-inflammatory compounds help reduce joint and tissue inflammation, which explains its traditional use for low back pain and arthritis. The herb also appears to support uterine muscle tone and fetal circulation, contributing to its longstanding use in stabilizing pregnancies.

What forms does Sang Ji Sheng come in?

In traditional practice, Sang Ji Sheng is most commonly prepared as a decoction (simmered tea), often combined with herbs like Du Zhong or Xu Duan in formulas for back pain or pregnancy. Modern preparations include standardized granules for convenience, capsules, and tablets. Standardized extracts offer more consistent dosing but the traditional decoction is still widely used in clinical TCM practice.

Where it comes from:

First recorded in the Shennong Bencao Jing (circa 200 CE), Sang Ji Sheng has been used continuously in Chinese medicine for joint pain, pregnancy complications, and hypertension. It appears in countless classical formulas, including the famous Du Huo Ji Sheng Wan for wind-cold-damp joint pain, one of the most used patent formulas in China. Its reputation spans TCM, Vietnamese traditional medicine, and related East Asian herbal systems.

What does Sang Ji Sheng help with?

• Low back and knee pain: Sang Ji Sheng is one of TCM's go-to herbs for chronic low back and knee pain, especially when it feels worse in cold or damp weather. It nourishes the tendons and supports joint cushioning, and is a key ingredient in classic formulas like Du Huo Ji Sheng Wan that have been used clinically for decades.
• Arthritis and joint inflammation: The herb's flavonoid compounds help calm inflammatory processes in joints and connective tissue. It is traditionally used for wind-cold-damp painful obstruction (Bi syndrome), which maps closely onto what modern medicine would call osteoarthritis or rheumatic conditions.
• High blood pressure: Sang Ji Sheng has a well-documented reputation in Chinese clinical medicine for helping manage blood pressure. Its flavonoids — particularly quercetin and hyperoside — appear to relax blood vessels and support healthy circulation. It is commonly used alongside conventional treatment in China for mild to moderate hypertension.
• Threatened miscarriage: In Chinese obstetric medicine, Sang Ji Sheng is a primary herb for calming a restless fetus and reducing the risk of early miscarriage, especially when linked to Kidney deficiency. It is often combined with E Jiao and Du Zhong in formulas designed to support uterine stability and fetal nourishment.
• Osteoporosis and bone weakness: By tonifying the Liver and Kidney — the organ systems TCM associates with bone density and tendon strength — Sang Ji Sheng is traditionally used for age-related bone weakness and frailty. Some laboratory research suggests its flavonoids may support bone-building cell activity.
• Heart palpitations: Sang Ji Sheng has mild calming effects on the heart and is used in TCM formulas for palpitations that accompany dizziness or a sense of depletion. This is thought to relate to its nourishing action on Liver Blood and its gentle cardiovascular relaxant properties.
• Dizziness and vertigo (liver-kidney deficiency pattern): When dizziness comes alongside low back weakness, ringing in the ears, or fatigue — a pattern TCM attributes to Liver-Kidney deficiency — Sang Ji Sheng is a classic choice. It addresses the root deficiency that underlies these symptoms rather than suppressing them directly.
• Numbness and tingling in limbs: The herb is used in TCM for numbness, tingling, and weakness in the extremities when these stem from wind-dampness or blood deficiency obstructing the meridians. It is typically combined in formulas with blood-moving and wind-expelling herbs for best results.

What can Sang Ji Sheng help prevent?

• Age-related bone density loss (supportive role when used long-term as part of Kidney-tonifying protocols)
• Recurrent miscarriage (in women with Kidney deficiency pattern, used preventively during first trimester)

Which foods are rich in Sang Ji Sheng?

Sang Ji Sheng is not found in food — it is a medicinal herb taken as a decoction or supplement. To support the same Liver and Kidney pathways it targets, focus on: dark leafy greens (spinach, kale) for blood nourishment; black sesame seeds, black beans, and walnuts which TCM associates with Kidney strengthening; bone broth for joint and connective tissue support; foods rich in quercetin like onions, apples, and capers to complement its anti-inflammatory flavonoid activity; and oily fish (salmon, sardines) for natural anti-inflammatory omega-3s. Avoid excessive raw, cold, or dampening foods (heavy dairy, refined sugar, iced beverages) which TCM considers counterproductive for the wind-damp patterns Sang Ji Sheng treats.

What are the side effects of Sang Ji Sheng?

• Mild nausea or stomach upset (uncommon, usually with decoction on empty stomach)
• Loose stools at high doses
• Mild dizziness in sensitive individuals
• Potential blood pressure drop if combined with antihypertensive drugs
• Rare allergic skin reactions

Good to know:

Sang Ji Sheng has a long track record of safe use in clinical TCM, including during pregnancy. Most people tolerate it well. The main quality concern is accurate botanical identification — different host tree species can affect the chemical makeup of the herb, so sourcing from reputable suppliers is important.

How much Sang Ji Sheng should you take?

• Recommended daily: 9–30 g dried herb for decoction; 500–1,500 mg standardized extract (capsule/tablet) daily. In classical formulas, typical dose is 15 g in decoction.
• Best time of day: Decoction typically taken in two divided doses, morning and evening. Capsules or tablets can be taken at any consistent time.
• With or without food: Best taken with or just after food to minimize any risk of stomach upset.
• Time to effect: 2–4 weeks for blood pressure and musculoskeletal effects; 4–6 weeks for bone and chronic deficiency patterns
• How long to take it: Can be taken long-term as part of a tonifying formula under TCM guidance. For acute conditions (threatened miscarriage, acute back pain flare), use for 4–8 weeks then reassess. Chronic deficiency patterns typically require 3–6 months of consistent use.