Si Jun Zi Tang

Four Gentlemen Decoction

Tonify Spleen Qi • Strengthen Digestion • Support Recovery • Build the Foundation

Si Jun Zi Tang is one of the most foundational formulas in Chinese medicine and is often considered the starting point for understanding Qi tonification. First recorded in the Tai Ping Hui Min He Ji Ju Fang (Imperial Grace Formulary of the Tai Ping Era), it represents the classic approach for rebuilding the Spleen Qi system—the foundation responsible for transforming food, generating Qi, and supporting the body’s daily function.

Unlike formulas that address specific symptoms or organ patterns, Si Jun Zi Tang works at the constitutional level by strengthening the Spleen and harmonizing the Middle Jiao. It provides the essential foundation from which more complex formulas are built.

When patients present with fatigue, weak digestion, bloating, poor appetite, loose stools, and weakness of the limbs, Si Jun Zi Tang is often one of the first formulas practitioners consider.

Beyond digestive complaints, this formula has become a cornerstone prescription for recovery after chronic illness, constitutional weakness, fatigue patterns, and any case where the body lacks the Qi necessary to rebuild.

Traditional Indications

• Spleen Qi deficiency
• Fatigue
• Poor appetite
• Weak digestion
• Bloating
• Loose stools
• Weak limbs
• Pale complexion
• Low vitality
• Chronic deficiency patterns
• Recovery after illness

TCM Pattern

Spleen Qi Deficiency with Weak Middle Jiao Function

Si Jun Zi Tang tonifies Spleen Qi, strengthens transformation and transportation, harmonizes the Middle Burner, and provides the foundation for building Blood and restoring vitality.

Modern Clinical Applications

Many practitioners reach for Si Jun Zi Tang when supporting patients experiencing:

• Chronic fatigue
• Weak digestion
• Poor nutrient absorption patterns
• Bloating after meals
• Loose stools
• Recovery after prolonged illness
• Constitutional weakness
• Low energy with digestive symptoms
• Malabsorption patterns
• Patients needing a gentle foundational tonic

Its simplicity and versatility make it one of the most important building-block formulas in Chinese medicine.

Ingredients

Ren Shen — 30%
Bai Zhu — 30%
Fu Ling — 30%
Zhi Gan Cao — 10%

Classical ratio: 3:3:3:1

Based on classical ratios and standard modifications

Crafted using our signature Two-Cured Decoction™ process—combining a traditional hot water decoction with a secondary high-proof alcohol extraction—to capture both water-soluble and alcohol-soluble herbal constituents for a full-spectrum tincture.

Practitioner Favorites

Phlegm with Fatigue

50% Si Jun Zi Tang + 50% Er Chen Tang

Excellent when Spleen Qi deficiency has contributed to Damp and phlegm accumulation, creating fatigue, heaviness, chest congestion, or digestive stagnation.

Postpartum Fatigue with Anxiety

40% Si Jun Zi Tang + 30% Gui Pi Tang + 30% Suan Zao Ren Tang

A favorite combination when postpartum depletion presents with fatigue, Blood deficiency, anxiety, overthinking, and difficulty sleeping.

Single Herb Pairings

For further customization, consider adding:

Chen Pi or Sha Ren — when bloating, fullness, or digestive stagnation accompanies Spleen deficiency.

Huang Qi — when stronger Qi lifting support is needed, especially with prolapse, sinking Qi, or pronounced weakness.

Urban Herbs Practitioner Advantage

Every 16 oz amber bottle is designed for fast, customized dispensing in clinical practice. Blend Si Jun Zi Tang with complementary formulas to create individualized prescriptions in minutes—giving your patients the convenience of a liquid tincture while providing your practice with a flexible, space-saving herbal pharmacy.

Double-extracted. Ready to dispense. Built for practitioners.

Why Practitioners Keep Si Jun Zi Tang on the Shelf

Every practitioner eventually encounters the patient who says,

"I am tired all the time, my digestion is weak, and I never feel like I fully recover."

That patient often reflects the classic Si Jun Zi Tang presentation.

Its importance comes from its role as a true foundational formula. Rather than chasing individual symptoms, Si Jun Zi Tang strengthens the system responsible for producing and maintaining Qi. In Chinese medicine, strong digestion is the root of creating energy, Blood, and resilience.

Practitioners frequently reach for Si Jun Zi Tang when supporting:

• Chronic fatigue
• Weak digestion
• Poor appetite
• Bloating
• Loose stools
• Recovery after illness
• Constitutional weakness
• Low energy with Spleen deficiency
• Patients who need a gentle rebuilding formula
• Complex cases requiring a strong foundation

Because Urban Herbs tinctures are designed for blending, Si Jun Zi Tang becomes even more versatile when combined with formulas that transform Damp, nourish Blood, raise Qi, calm the Shen, or address deeper deficiency patterns.

For many practitioners, it is the formula they consider before adding complexity—because the foundation must be strong before the structure can be rebuilt.

One bottle. A timeless solution for strengthening the Spleen and rebuilding Qi from the root.

Practitioner Snapshot

Category

Qi Tonifying & Spleen Strengthening Formulas

Primary Actions

• Tonifies Spleen Qi
• Strengthens Digestion
• Harmonizes the Middle Jiao
• Supports Qi Production
• Improves Transformation and Transportation
• Builds the Foundation for Blood and Essence

Best For

• Spleen Qi deficiency
• Fatigue
• Poor digestion
• Bloating
• Loose stools
• Weak limbs
• Chronic illness recovery
• Constitutional weakness

Pairs Well With

• Shen Ling Bai Zhu San
• Er Chen Tang
• Gui Pi Tang
• Bu Zhong Yi Qi Tang
• Liu Jun Zi Tang

Clinical Personality

⭐⭐⭐⭐⭐ Spleen Tonification
⭐⭐⭐⭐⭐ Foundational Support
⭐⭐⭐⭐⭐ Digestive Strengthening
⭐⭐⭐⭐☆ Recovery Support
⭐⭐⭐⭐☆ Qi Building

Clinical Pearl

Si Jun Zi Tang is one of the classic formulas every practitioner associates with the phrase “build the foundation.” Its hallmark indication is a patient whose Spleen Qi is too weak to properly transform food, create energy, and support the body’s functions.

Its brilliance lies in its elegant simplicity. Ren Shen powerfully supports Qi, Bai Zhu strengthens the Spleen and dries Damp, Fu Ling supports fluid transformation, and Zhi Gan Cao harmonizes the entire formula. Together, these four herbs create the blueprint for countless Qi-tonifying formulas throughout Chinese medicine.

For practitioners, Si Jun Zi Tang remains the essential starting point for the patient who needs to rebuild—not just feel better temporarily, but restore the foundation that creates lasting vitality.