What is Zhu Ling Tang used for in Traditional Chinese Medicine?

Zhu Ling Tang, known as Polyporus Decoction, is a classical TCM formula primarily used to treat urinary difficulties caused by a combination of internal Damp-Heat and Yin injury. It directly targets symptoms such as painful or burning urination, frequent but scanty urination, urinary tract discomfort, dark urine, thirst, and occasional restless sleep.

How does Zhu Ling Tang promote urination without injuring body fluids?

Unlike standard diuretic formulas that can dry out the body, Zhu Ling Tang features a unique balance. While its primary herbs work to drain pathogenic dampness and clear heat from the bladder, it simultaneously utilizes specialized ingredients to enrich Yin fluids, protecting the body's natural hydration system during the process.

What are the main herbal ingredients in Zhu Ling Tang?

The elegant and classic Zhu Ling Tang formula is made up of exactly 5 powerful TCM ingredients: Zhu Ling (Polyporus Sclerotium), Fu Ling (Poria Sclerotium), Ze Xie (Water Plantain Root), Hua Shi (Talcum), and E Jiao (Donkey-Hide Gelatin).

Dampness-Draining Formulas

猪苓汤 · Zhū Líng Tāng

Zhu Ling Tang

Shang Han Lun formula for water retention with Heat and Yin injury, presenting with urinary difficulty, thirst, and possible fever or restlessness. Differs from Wu Ling San by adding Yin-nourishing and Heat-clearing actions.

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Last reviewed August 2026

Formula CategoryDampness-Draining Formulas

Primary PatternDamp-Heat

Primary FunctionPromote urination, clear Heat, nourish Yin

Primary Therapeutic PrinciplePromote urination, clear Heat and nourish Yin

Main HerbsPolyporus · Poria / Hoelen · Alisma Rhizome · Talcum · Donkey-hide Gelatin

Classical SourceShang Han Lun (Zhang Zhongjing, Eastern Han)

Why This Formula?

Traditionally selected when Damp-Heat obstructs urination and Yin has already been injured, draining while moistening — a cooler, Yin-protecting counterpart to Wu Ling San's warmer Yang-supporting approach, and quite unlike Zhen Wu Tang, which warms Yang for edema of deficiency origin.

Overview

What Is Zhu Ling Tang?

1. Classic Origin

Zhu Ling Tang, also known as Polyporus Decoction, is a classical formula from Zhang Zhongjing’s Shang Han Lun (Treatise on Cold Damage). Designed to promote urination, clear heat, and nourish yin, it addresses the pattern of water retention complicated by heat and yin deficiency.

This formula is primarily used for symptoms such as difficult urination, thirst, irritability, insomnia, low-grade fever, and in some cases blood-tinged urine. It remains an important prescription in Traditional Chinese Medicine for treating fluid retention when heat and yin deficiency are also present.

2. Urinary System Issues

Zhu Ling Tang is a classic choice for common urinary tract issues like cystitis (bladder infection) or urethritis. It is especially helpful when your body feels "hot" and "stuck."

Common Symptoms: You might feel a constant, urgent need to go, but find it painful when you do. Your urine might look dark yellow or even have a reddish tint. This is often accompanied by a fever and a strong thirst that doesn’t go away.
How it helps: In Traditional Chinese Medicine, these symptoms mean "water and heat" are trapped together while your internal fluids (Yin) are low. This formula effectively clears that heat, flushes out the dampness, and helps your body replenish its healthy moisture so you can recover faster.

3. Swelling (Edema)

This formula is also used to treat swelling, particularly when the swelling is caused by a mix of trapped fluid and internal heat.

Common Symptoms: You might notice your arms or legs are swollen (edema), but you are barely peeing at all. You might also feel restless, irritable, and very thirsty. It is often used in the early stages of acute kidney issues (like nephritis) where this "water-heat" combo is obvious.
How it helps: It acts like a reset for your body’s water management system. By encouraging urination and clearing out stagnant heat, it helps the swelling go down and makes you feel much more comfortable.

4. Painful Urination or Stones (Stranguria)

In TCM, "Stranguria" refers to various types of difficult or painful urination, including cases involving kidney stones or blood in the urine.

Common Symptoms: You might experience sharp, "astringent" pain during urination, see blood in your urine, or feel a lot of internal heat and restlessness.
How it helps: By using its natural diuretic and cooling properties, the formula helps ease the pain and "flush" the system. While it is clearing the problem, it also protects your internal fluids (Yin), which helps soothe the urinary tract and supports the body in healing from the irritation caused by stones or inflammation.

How It Works

Herb Composition (Sovereign / Minister / Assistant / Envoy)

1. The Leader (Monarch Herb) — Zhu Ling

Zhu Ling (Polyporus) has a mild, sweet taste and a neutral nature. It works directly with your Kidney and Bladder systems.

Clearing the Pipes: Its main job is to act like a natural diuretic. It helps your body flush out excess "dampness" (fluid retention) by moving it through the urinary tract.
Setting the Foundation: Because it is so good at dredging the body’s water passages, it acts as the foundation of this formula, making sure pathogenic moisture has a way out.

2. The Deputy (Minister Herb) — Fu Ling

Fu Ling (Poria) is also mild and neutral, but it reaches more areas, including the Heart, Spleen, and Kidneys.

Extra Power: It joins forces with Zhu Ling to make the fluid-clearing effect even stronger.
Supportive Care: Beyond just moving water, it helps boost your digestion (Spleen) and calms your mind. This is important because it prevents the "water-moving" herbs from draining your body's healthy energy (Qi).

3. The Helper (Assistant Herb) — Ze Xie

Ze Xie (Alisma) has a cool nature, which is key for this formula.

Strong Flushing: It provides a powerful boost to the diuretic effect, helping the body pee out excess fluids.
Cooling Down: If the trapped fluids in your body start to "overheat," Ze Xie steps in to drain that heat from the Kidney and Bladder. It helps clear the heat without hurting your body's healthy foundation.

4. The Hydrator (Assistant Herb) — E Jiao

E Jiao (Donkey-hide Gelatin) is sweet and neutral, focusing on the Lungs, Liver, and Kidneys.

Moisture Protection: While the other herbs are busy flushing water out, E Jiao makes sure you don't get too dry. It nourishes your "Yin" (internal fluids) and blood.
Keeping the Balance: It protects your body's essential moisture from being damaged by the diuretic herbs, ensuring you stay hydrated while the "bad" fluids are removed.

5. The Guide (Envoy Herb) — Hua Shi

Hua Shi (Talc) is a cool mineral herb that works on the Bladder, Lung, and Stomach.

The GPS: This herb acts as a guide, directing the power of all the other herbs straight to where they are needed—the urinary system.
Smooth Exit: It helps the medicinal power "descend" and leave the body through urine. It also adds an extra layer of heat-clearing and makes the entire formula feel more gentle and smooth on the body.

Symptoms Traditionally Associated

Clinical Presentation in TCM

1. What’s Going Wrong? (Pathogenesis)

The main problem that Zhu Ling Tang addresses is a messy combination of trapped fluid ("water") and internal inflammation ("heat").

The "Water-Heat" Knot: Sometimes, a sickness starts on the outside of the body but moves inside and turns into heat. This heat gets tangled up with the fluids already in your body, creating a blockage.
Bladder Issues: This "tangled" heat and dampness prevents your bladder from working correctly, making it hard to pee or causing discomfort.
Drying You Out: Because the heat is trapped, it acts like a slow burner that dries out your body’s healthy moisture (Yin fluid). This leaves you in a state where you have an active problem (heat and dampness) and a growing weakness (dehydration/dryness).

2. What the Formula Does (Effects)

Zhu Ling Tang is designed to multi-task. It doesn't just treat the symptoms; it addresses the underlying imbalance:

Flushing the System: It acts as a natural diuretic to help your body "drain" the stagnant, unhealthy fluids through your urine.
Cooling Down: It clears away the trapped heat that is causing inflammation and discomfort.
Restoring Moisture: Unlike other diuretics that might dry you out further, this formula specifically nourishes your "Yin" to replace the healthy fluids you've lost. It treats both the "branch" (the symptoms) and the "root" (the dehydration and heat).

3. When to Use It (Indications)

This formula is most commonly used for issues that look like modern-day urinary tract infections (UTIs), kidney issues, or significant swelling (edema). You might need this if you experience:

Urinary Trouble: Difficulty peeing or a frequent, urgent need to go that feels uncomfortable.
Internal Heat Signs: A fever, feeling very thirsty (wanting to drink all the time), or feeling restless and unable to sleep at night.
Other Symptoms: Sometimes this comes with a cough, a feeling of nausea, or even diarrhea.
Physical Signs: A practitioner might notice a red tongue with a thin white or yellow coating and a fast, thin pulse.

The Bottom Line: If your body is struggling with trapped heat and water while also feeling "dried out" internally, Zhu Ling Tang is the go-to remedy to clear the pipes and restore balance.

Formula Analysis

The Mechanism in Classical Theory

1. Promoting Urination and Clearing Dampness

This formula uses four different herbs to help your body flush out excess fluids. Each one has a slightly different way of working to make sure the "stuck" water has a clear exit:

Zhu Ling (Polyporus) works by "dredging" or opening up the body’s water passages.
Fu Ling (Poria) supports your digestive system (Spleen) to help it manage and move fluids more effectively.
Ze Xie (Alisma) focuses on both clearing heat and pushing water out.
Hua Shi (Talc) helps ease the discomfort of urination and makes sure the fluids flow smoothly.
The Result: By working together, these four herbs ensure that trapped moisture (dampness) is gathered and released through urine, quickly relieving symptoms like difficulty peeing or a heavy, bloated feeling.

2. Clearing Heat and Lowering "Fire"

When fluids are trapped in the body for too long, they can "overheat," leading to inflammation and discomfort. This formula uses two "cold" herbs to cool things down:

Ze Xie (Alisma) is naturally cold and specifically clears heat out of the Kidney and Bladder systems.
Hua Shi (Talc) also has a cooling nature and is excellent at draining internal heat and calming irritability.
The Result: These herbs act like a cooling system for your body, putting out the "internal fire" that causes fever, restlessness, and that burning sensation often felt during a urinary tract issue.

3. Nourishing Internal Fluids (Yin) and Preventing Dryness

A common problem with many water-clearing (diuretic) remedies is that they can dry you out too much. This formula includes a special ingredient to prevent that:

E Jiao (Donkey-hide Gelatin) is the "moisturizer" of the formula. It nourishes your Yin (essential body fluids) and helps stop any internal bleeding.
The Result: While the other herbs are busy flushing out the "bad" fluids, E Jiao protects and replenishes your "good" fluids. This ensures that the treatment is balanced—clearing the blockage without leaving your body dehydrated or depleted.

How This Formula Compares

Clinical Comparison Table

Compare	Zhu Ling Tang	Wu Ling San	Zhen Wu Tang	Da Cheng Qi Tang
Primary Function	Promote urination, clear Heat, nourish Yin	Promote urination, drain Dampness, warm Yang	Warm Yang, promote urination, transform water	Strongly purge Heat accumulation and constipation
Formula Category	Dampness-Draining Formulas	Dampness-Draining Formulas	Yang-Tonifying Formulas	Purgative Formulas
Typical TCM Pattern	Damp-Heat	Dampness	Yang Deficiency	Stomach Heat
Main Conditions	Edema, Frequent Urination, Yin Deficiency Constitution	Edema, Frequent Urination, Damp Constitution	Edema, Abdominal Pain, Cold Limbs, Diarrhea, Palpitations	Constipation, Bloating, Abdominal Pain, Fever, Anxiety Restlessness
Main Herbs	Polyporus · Poria / Hoelen · Alisma Rhizome · Talcum · Donkey-hide Gelatin	Alisma Rhizome · Poria / Hoelen · Polyporus · White Atractylodes Rhizome · Cinnamon Twig	Prepared Aconite Accessory Root · White Atractylodes Rhizome · Poria / Hoelen · White Peony Root · Fresh Ginger	Rhubarb Root and Rhizome · Mirabilite / Glauber's Salt · Magnolia Bark · Immature Bitter Orange
Classical Source	Shang Han Lun (Zhang Zhongjing, Eastern Han)	Shang Han Lun (Zhang Zhongjing, Eastern Han)	Shang Han Lun (Zhang Zhongjing, Eastern Han)	Shang Han Lun (Zhang Zhongjing, Eastern Han)

How to tell them apart

Zhu Ling Tang drains Damp-Heat while protecting Yin. Wu Ling San is more for cold-type water amassment with Yang support. Zhen Wu Tang warms Yang for edema from Yang deficiency. Da Cheng Qi Tang purges solid Heat accumulation.

For educational reference only, based on traditional pattern differentiation — not a substitute for professional advice.

Clinical Modifications

Clinical Modifications for Zhu Ling Tang

1. If You Have a Cold or Flu at the Same Time (Exterior Syndrome)

Sometimes you might catch a cold or flu (what we call an "exterior syndrome") while you are already dealing with internal urinary issues. If this happens, a practitioner might add herbs that help clear the surface of your body:

Bo He (Mint) and Jing Jie (Schizonepeta): These herbs help "release the exterior," meaning they help your body push out the cold or flu pathogens.
The Result: By adding these, the formula can handle the fever or chills from your cold while the Zhu Ling Tang base continues to flush out the internal heat and dampness.

2. If You Notice Blood in the Urine (Hematuria)

If the internal heat is very intense, it can actually damage the blood vessels in the urinary tract, leading to blood in the urine. In this case, "blood-cooling" herbs are added to stop the bleeding:

Xiao Ji (Cirsium) and Bai Mao Gen (Imperata Root): These herbs are excellent at cooling the blood and acting as natural ways to stop bleeding.
The Result: This modification strengthens the formula's ability to stop bleeding quickly without stopping the important work of clearing out the "water-heat" blockage.

3. If the Inflammation is Very Severe (Predominant Damp-Heat)

If your symptoms feel particularly heavy, sticky, or the "burning" sensation is very strong, it means the "damp-heat" is the main problem. To tackle this, we add stronger herbs to dry out the dampness and kill the heat:

Huang Bai (Phellodendron) and Ku Shen (Sophora Root): These are powerful "bitter and cold" herbs. They act like a heavy-duty cleaning crew for the lower part of your body.
The Result: Adding these boosts the formula's power to drain severe infections and clear out stubborn, stagnant heat, helping you get relief from intense inflammation much faster.

Modern Research

What the Science Suggests

1. What Modern Science Says About the Herbs

Modern pharmacological research has looked closely at how the ingredients in Zhu Ling Tang work in the body:

Natural Diuretic Effect: Research confirms that herbs like Zhu Ling (Polyporus), Fu Ling (Poria), and Ze Xie (Alisma) are effective natural diuretics. They help increase urine volume and promote the flushing of fluids, which is why the formula is so good at reducing swelling (edema).
Fighting Infections: Studies show that this formula has an inhibitory effect on bacteria and viruses that typically cause urinary tract infections. This provides scientific backing for its traditional use in treating UTIs.
Blood and Immune Support: E Jiao (Donkey-hide Gelatin) has been found to support blood health (hematopoietic function) and boost the immune system. Its "Yin-nourishing" property also helps maintain the body's overall internal balance.
Soothing the System: Hua Shi (Talcum) acts as a protective layer for the lining of the urinary tract. It helps lubricate the area and reduces the irritation caused by inflammation.

2. New Findings in Clinical Research

In recent years, doctors and researchers have been exploring new ways to use Zhu Ling Tang to treat more than just simple infections and swelling:

Kidney Health: There is growing evidence that this formula can be helpful for more serious conditions, such as diabetic kidney disease (nephropathy) and chronic kidney failure.
Improving Quality of Life: Clinical studies have found that Zhu Ling Tang can help improve key markers of kidney function. Patients in these studies often reported fewer symptoms and felt a significant improvement in their overall quality of life.
Expanding Possibilities: These findings are opening up new doors for using this ancient formula to treat complex, modern chronic diseases, showing that it still has a lot to offer in modern medical practice.

Safety

Safety Considerations

1. Cautions & Special Populations

Zhuling Decoction clears heat, promotes diuresis, and nourishes yin—use cautiously in deficiency‑cold constitutions (spleen‑stomach or kidney yang deficiency) as it may further deplete yang qi. Pregnant women should use only under strict physician evaluation and guidance due to potential fetal effects.

2. Dietary Restrictions & Lifestyle

During treatment avoid spicy, greasy, raw, and cold/stimulating foods that worsen damp‑heat and impair efficacy. Rest adequately, avoid fatigue, and maintain healthy habits; seek medical advice if symptoms change or worsen.

Available Products

Where to Get It

HJMEDICAL Hoi Tin Zhu Ling Tang (Polyporus Decoction) 5:1 Concentrated Granules $30.50

HJMEDICAL Hoi Tin Wu Ling San (Five-Ingredient Powder with Poria) 5:1 Concentrated Granules $22.15

HJMEDICAL Nong's Wu Ling San (Poria Five Powder) 5:1 Concentrated Granules $51.25

FAQ

Questions About Zhu Ling Tang

Q1: What are the actions of Zhu Ling Tang?

Zhu Ling Tang has the actions of promoting urination, clearing Heat, and nourishing Yin. It is primarily used for patterns of water and Heat binding together with concurrent Yin injury, featuring difficult urination, thirst, and restlessness.

Q2: Which modern diseases is Zhu Ling Tang suited to?

Modern TCM clinical practice commonly applies it to individuals whose pattern differentiation falls within water-Heat binding with Yin deficiency, including urinary tract infections, nephritis, cystitis, postpartum urinary retention, and certain cases of hematuria or edema with Heat and Yin injury.

Q3: Is Zhu Ling Tang suitable for improving difficult urination with thirst and irritability?

For presentations of scanty or difficult urination, fever, thirst with desire to drink, vexation or insomnia, and a red tongue with a thin rapid pulse — in those whose pattern differentiation confirms water and Heat binding with Yin damage — TCM commonly applies Zhu Ling Tang as an adjunct. It cannot replace standard medical treatment.

Q4: Who should not take Zhu Ling Tang?

Those with pure cold-type water retention, severe Yin deficiency without water accumulation, or cases of profuse sweating with thirst (where further diuresis would worsen dryness) are generally not suitable. Use should be assessed by a qualified TCM physician based on individual constitution and pattern differentiation.

Q5: How does Zhu Ling Tang differ from Wu Ling San?

Wu Ling San primarily promotes urination and transforms Qi for water accumulation, often with milder or residual exterior signs and without significant Heat or Yin injury. Zhu Ling Tang addresses water retention complicated by Heat and Yin damage, adding Yin-nourishing (E Jiao) and Heat-clearing (Hua Shi) actions so that diuresis does not further deplete fluids.

Q6: Can Zhu Ling Tang help with bloody or painful urination?

Yes, when hematuria or painful urination arises from Damp-Heat damaging the urinary pathways in the context of water-Heat binding and Yin injury. The formula drains the pathogenic water and Heat while protecting Yin, provided the overall pattern matches.

Q7: What are the main ingredients of Zhu Ling Tang?

The classical formula consists of five herbs: Zhu Ling (Polyporus) and Fu Ling to promote urination and drain Dampness, Ze Xie to further leach out water, Hua Shi (Talc) to clear Heat and ease urination, and E Jiao (Donkey-hide gelatin) to nourish Yin and protect fluids.

Q8: Is Zhu Ling Tang suitable for long-term use?

It is generally used for a defined course under professional supervision until the water-Heat pattern resolves. Prolonged diuresis requires monitoring of fluid balance and Yin status, as the formula is not intended for indefinite use.

Q9: Why does the Shang Han Lun warn against using Zhu Ling Tang in certain Yang Ming cases?

When there is already profuse sweating and thirst (indicating Stomach dryness), further promoting urination can deplete remaining fluids. In such situations the formula is contraindicated because it would aggravate the dryness rather than resolve the pattern.

Q10: What lifestyle advice supports the use of Zhu Ling Tang?

Maintaining adequate but not excessive fluid intake as guided by the practitioner, avoiding excessively heating or drying foods, and ensuring rest help support the formula’s dual action of draining pathogenic water while protecting Yin. Professional guidance remains essential for safe and effective use.

FAQ

General Questions

How do I choose the right formula?

TCM formulas are traditionally selected according to individual pattern differentiation rather than by symptom alone. If you're not sure which formula fits your presentation, take our AI Assessment below for a personalized starting point, then confirm with a qualified TCM practitioner.

What are concentrated herbal granules?

Concentrated herbal granules are made by decocting raw herbs, then extracting and concentrating the resulting liquid into a fine granule or powder form. This preserves the same active compounds as a traditional decoction while making the herbs far easier to store, measure, and prepare.

How should I take these products?

Dissolve the recommended amount of granules in hot water, stir until fully dissolved, and drink while warm — following the dosage and frequency advised by your TCM practitioner or as stated on the product packaging.

Are concentrated herbal granules equivalent to traditional decoctions?

Concentrated granules are produced from the same herbs and processed to retain their active compounds, so they are traditionally regarded as a convenient alternative to decoctions rather than a different remedy. Some practitioners note subtle differences in strength or absorption between the two forms, so your TCM practitioner may adjust dosage accordingly.

Are your products authentic?

Yes. HJMEDICAL sources its concentrated granules exclusively from established, reputable manufacturers such as Nong's and Hoi Tin, both long-standing names in the TCM granules industry, with GMP compliance stated directly on their packaging.

Are HJMEDICAL products manufactured under GMP standards?

HJMEDICAL sources its concentrated granules from established, reputable manufacturers such as Nong's and Hoi Tin, both long-standing names in the TCM granules industry. GMP compliance for these products is stated directly on their packaging.

Do you ship internationally?

Yes — we ship worldwide! Every order goes out via Hong Kong Post, and your exact shipping cost and estimated delivery time for your address are calculated and shown right at checkout, so there are never any surprises. We also offer free shipping once your order reaches our free-shipping threshold, so it's easy to stock up on your favorite formulas and save.

Can I take more than one formula at the same time?

Some formulas are traditionally combined, while others overlap or counteract each other. We recommend checking with a qualified TCM practitioner before combining formulas, especially if you are already taking other medication.

Are these products suitable during pregnancy or breastfeeding?

Some TCM formulas are not suitable during pregnancy or breastfeeding. Please consult a qualified TCM practitioner or your doctor before use if you are pregnant, trying to conceive, or nursing.

Do these products replace medical treatment?

No. These products are traditional herbal supplements intended to support wellbeing according to TCM principles — they are not a replacement for professional medical diagnosis or treatment. Please consult a qualified TCM practitioner or licensed healthcare provider before starting, stopping, or combining any treatment, especially if you have a chronic condition.

Medical Disclaimer

For general TCM education only — not medical advice. Consult a qualified TCM practitioner or licensed healthcare provider before use, especially if pregnant, nursing, on medication, or managing a chronic condition.

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