Feeling Blocked, Stuffy, and Congested All Over? The Ming Imperial Academy’s Famous Formula Da Huo Luo Dan (Great Meridian-Activating Pill): Phlegm-Dampness, Blood Stasis, Cold and Heat All Mixed Together, Cleared with Four Pathways at Once

Patient search terms: blocked meridians / qi and blood stagnation / feeling stuffy and congested / phlegm-dampness with blood stasis / cold and heat mixed / joint pain / hemiplegia after ischemic stroke / Da Huo Luo Dan / Tong Ren Da Huo Luo Wan

Opening: every day, countless friends ask me — “I feel so blocked and stuffy, what do I do?”

Dear friends, good morning. Today let’s talk about an extremely common problem — qi and blood stagnating in the body’s meridians, that is, the meridians not flowing freely.

💬 Note from Doctor Luo: Every day, countless friends consult me: Doctor Luo, what do I do about this problem? What about that one? Actually, in earlier talks I explained body constitution — broadly speaking, constitutions fall into qi deficiency, blood deficiency, yin deficiency, yang deficiency, phlegm-dampness, blood stasis, and the qi stagnation of constrained liver qi (gan qi bu shu). But please note: real illness never follows the textbook — “I am exactly this one type, exactly that one type,” so neatly. Often it starts with a single factor, but by the time you see a doctor, all kinds of factors have become mixed together. So you must analyze the problem from multiple angles.

What I want to talk about today is exactly this kind of “everything jumbled together” complexity — blockage of the body.

When the body is “blocked,” is it really just blood stuck there?

When we say “blood stasis” (yu xue), everyone easily understands: the blood cannot circulate, it is stuck. But Doctor Luo reminds us: is meridian blockage only about blood being stuck? Not necessarily.

💬 Note from Doctor Luo: Take a person with heavy phlegm-dampness in the body, for example. Phlegm and dampness are distinct — when dampness inside the body is heavy, there is excess fluid that cannot be excreted. Now, when dampness is heavy and fluids are excessive, will it obstruct the movement of qi and blood in the meridians? Absolutely. And when there is too much water-dampness, will it combine with blood stasis? It will. So you see — dampness and blood stasis join forces. When dampness stays heavy for a long time, fluids condense into thick, sticky substances — that is phlegm. Take high blood lipids and sluggish blood flow: inside the vessels there is too much sticky material, too much waste. So phlegm-dampness and blood stasis both obstruct the movement of qi and blood through the meridians — that is a core concept.

Blocked in the middle: “ice and fire” at the two ends

If blood stasis and phlegm-dampness block one spot — say, the middle of a pipe — what happens? Doctor Luo described a very vivid picture.

💬 Note from Doctor Luo: Blocked in the middle — what about the lower end that is not blocked? Qi and blood cannot flow through. When the meridian is left empty, is it easy for cold pathogens to invade? Very easy, right? Once you catch a chill, that section of meridian is especially vulnerable, so you get cold-pattern symptoms — the further toward the extremities, toward the far ends of the limbs, the less qi and blood arrive; when the outside temperature drops, you feel cold, hands and feet icy. And on the upper side of the blockage? Material is in surplus; it wants to pass through but cannot; qi, blood, phlegm and dampness pile up together — easily transforming into heat, producing heat-pattern symptoms. So cold and heat appear in the body at the same time — cold and heat intermingled (han re cuo za) — along with deficiency and excess intertwined (xu shi jian za).

So when you hear “blocked meridians, so I caught cold,” you must differentiate the pattern — not necessarily. This is exactly where pattern differentiation comes in.

Many ways to resolve stasis: one blood stasis, eight treatments

So what approaches are there for regulating blood stasis? Doctor Luo first laid out a series of “single-track” treatments.

💬 Note from Doctor Luo: For blood stasis we have all kinds of formulas — Xue Fu Zhu Yu Tang (Blood Mansion Expelling Stasis Decoction), Tao Hong Si Wu Tang (Peach Kernel and Safflower Four Substances Decoction), and so on. Blood stasis from cold — we warm yang and resolve stasis; blood stasis from constrained liver qi — we soothe the liver, regulate qi, and invigorate blood to resolve stasis; blood stasis from heat — we clear heat and resolve stasis; blood stasis from blood deficiency — we nourish blood and resolve stasis — all kinds of approaches. But what if you have blood stasis and phlegm-dampness and cold and heat all at once, completely mixed together? What then? That is complicated.

Today’s protagonist is the formula made for exactly this “big mixed stew” — the famous Ming dynasty Imperial Academy formula, Da Shen Xiao Huo Luo Dan (the Great and Wonderfully Effective Meridian-Activating Pill), usually called Da Huo Luo Dan (Great Meridian-Activating Pill).

The famous formula’s origin: a formula the Imperial Academy director never finished writing

Where did this formula come from? Doctor Luo told a story from the history of formulas.

💬 Note from Doctor Luo: In the Ming dynasty there was a very famous book called Qi Xiao Liang Fang (Wonderfully Effective Formulas), full title Tai Yi Yuan Jing Yan Qi Xiao Liang Fang Da Quan (Complete Collection of Wonderfully Effective Formulas from the Imperial Academy of Medicine). Why “Imperial Academy”? The original author was Dong Su, the yuan shi (director) of the Imperial Academy of Medicine — that is, the head of the medical academy inside the imperial palace. He collected the formulas that the academy used constantly and found especially effective, wanting ordinary people to be able to use them too. But he died before finishing. Then his deputy, Fang Xian, organized the manuscript, supplemented and adjusted it, and the book was published. Many famous formulas from it were later collected into other books — for instance, this one also appears in She Sheng Zhong Miao Fang (Myriad Marvelous Formulas for Nourishing Life) by the Ming writer Zhang Shiche.

Why did this formula earn a place in the Imperial Academy’s “best-of collection”? Because what it regulates is precisely what we today call meridian blockage.

First pathway: support upright qi first — Si Jun Zi Tang as the foundation

For such a complex formula, Doctor Luo says the thinking is exceptionally clear — the very first move is supporting upright qi (fu zheng).

💬 Note from Doctor Luo: First, analyze: why is there blood stasis? Why is phlegm-dampness stuck there? External cold-damp can only get in because your own upright qi is insufficient; blood stopping and refusing to move is also because upright qi is insufficient — too weak to push it along. So when regulating the body you must hold to the root — support upright qi. If your one wish is to unblock it, then go ahead and unblock — when upright qi is insufficient, the more you force the passage the more you drain your qi. The moment of unblocking feels great, but a few days later the external pathogen comes back, the cold-damp comes back — why is it blocked again? Because insufficient upright qi is the root.

The first group of herbs in the formula embodies this thinking: red ginseng (hong shen), bai zhu (Atractylodes), fu ling (Poria), and gan cao (licorice) — what is this? Si Jun Zi Tang (Four Gentlemen Decoction).

💬 Note from Doctor Luo: Ren shen (ginseng) is the most effective herb for tonifying qi; bai zhu strengthens the spleen; fu ling drains dampness and strengthens the spleen; add gan cao — and this is Si Jun Zi Tang, the principal formula for tonifying the spleen and qi, the “ancestor formula” of tonification. First, tonify the qi of the spleen and stomach — that is pathway number one.

Second pathway: nourish blood and yin — from Si Wu Tang to Ba Zhen Tang

The second pathway is nourishing blood.

💬 Note from Doctor Luo: Shu di huang (prepared Rehmannia) tonifies the essence of the liver and kidneys; add dang gui (Chinese angelica) — which tonifies blood, nourishes liver blood, and opens the blood vessels — add chi shao (red peony root) — which unblocks the meridians and blood vessels — and add chuan xiong (Ligusticum) to regulate qi and invigorate blood. Shu di, dang gui, shao yao, chuan xiong — what is this? Si Wu Tang (Four Substances Decoction), the principal formula for nourishing blood; almost all blood-nourishing methods build on it. And Si Jun Zi Tang combined with Si Wu Tang is called what? Ba Zhen Tang (Eight Treasures Decoction) — tonifying both qi and blood. So a formula this classic first tonifies and stabilizes your qi and blood before anything else.

And hidden inside this “blood-nourishing formula” is a clever touch — nourishing yin in advance.

💬 Note from Doctor Luo: Shu di huang tonifies kidney essence; add a little dang gui and it develops toward nourishing blood; add a little yin-nourishing medicine and it develops toward supplementing yin and generating fluids. This formula includes prepared he shou wu (fleeceflower root) — which nourishes the liver and moves toward nourishing yin — gui jia (tortoise shell) — which nourishes yin, anchors yang, has a constraining action, and clears deficiency heat — and xuan shen (Scrophularia) — which nourishes yin, generates fluids, and clears heat. Why nourish yin in advance? Because later in the formula there are many aromatic herbs that move qi, blood, and unblock the collaterals — and these easily damage yin. Protect the yin first, and then when you go on to move qi and blood, you can do it with full confidence.

Third pathway: warm yang — fu zi, rou gui, xi xin

When the body’s qi and blood are insufficient, it is especially easy for external cold to invade. What to do? Warm yang.

💬 Note from Doctor Luo: What does fu zi (aconite) do? It warms yang and dispels cold-damp, reviving the yang qi inside the body and driving out cold-damp. Paired with rou gui (cinnamon bark) — warming yang, reviving yang qi. Xi xin (Asarum) — warms yang and unblocks the meridians. This is pathway three — warming yang.

Fourth pathway: clear heat and drain waste — da huang, huang lian, huang qin, water buffalo horn, niu huang

Warming yang and clearing heat at the same time — why? Because cold and heat are intermingled.

💬 Note from Doctor Luo: Da huang (rhubarb) clears heat and opens the bowels, draining out the waste — especially draining the heat out, so that evil heat does not linger inside. Add huang lian (Coptis) and huang qin (Scutellaria) to clear heat. Phlegm-dampness and blood stasis transform into heat locally, so we drain waste and clear heat at the same time. There is also water buffalo horn — in the past rhino horn was used, but today, for animal protection, water buffalo horn replaces it. And niu huang (ox bezoar) resolves phlegm-heat. When phlegm-dampness accumulates and congeals, and qi and blood stasis generates heat — especially in the upper burner: the brain and head — it causes systemic problems, so this heat must be cleared and the phlegm-heat resolved.

Zhang Jingyue’s “four dimensions”: ren shen, shu di, fu zi, da huang

With these four pathways of herbs together, Doctor Luo highlighted a famous saying from a Ming dynasty physician.

💬 Note from Doctor Luo: In the Ming dynasty there was a physician named Zhang Jingyue. He said that in using medicines there are “four dimensions” (si wei) — four directions. Which four? Ren shen (ginseng), shu di huang (prepared Rehmannia), fu zi (aconite), and da huang (rhubarb): ren shen tonifies qi, shu di tonifies essence and nourishes blood, fu zi warms yang, da huang clears heat and drains waste. Get the four dimensions straight, and ordinary illnesses can all be regulated. Look — in this formula we have red ginseng, we have shu di, we have fu zi, we have da huang — it is aimed at exactly these four directions.

Wind herbs: “blowing” the cold-damp out

With the four dimensions as the foundation, the formula still carries three big groups of “road-opening” herbs. The first group — wind herbs (feng yao).

💬 Note from Doctor Luo: Wind herbs are the medicines that dispel wind. I have talked about Li Dongyuan before — the Jin-Yuan era physicians were especially skilled at using wind herbs. Their school speaks of “yang within yang”: these herbs are light in nature and float upward, able to move the qi outward and expel cold-damp from the body, so they invigorate blood and unblock the collaterals and increase the permeability of the meridians. There is an ancient saying: “Wind can overcome dampness” (feng neng sheng shi) — wind-dispelling herbs can expel dampness from the body, while also opening up blood stasis and regulating the movement of qi. Moreover, different wind herbs enter different meridians — the tai yang, yang ming, and so on. The Jin-Yuan physicians left us a vast store of experience.

The formula uses wind herbs very generously: ma huang (ephedra) warms yang, disperses cold, and induces sweating, pushing cold-damp outward, and also opens the lung qi — the lungs govern the qi of the whole body; when lung qi opens, qi moves and dampness is easily eliminated. Qiang huo (Notopterygium) is a famous wind herb, entering the bladder and kidney meridians; it disperses wind, dissipates cold, and eliminates dampness — for blocked meridians, shoulder and back pain, joint pain, qiang huo can unblock the meridians and remove cold-damp. There are also fang feng (Saposhnikovia), ge gen (kudzu root), tian ma (Gastrodia), guan zhong (Cyrtomium), wei ling xian (Clematis), liang tou jian — all wind-dispelling and collateral-unblocking. Huo xiang (Agastache) is also a famous wind herb — fragrant, able to revive yang qi in the body, especially the yang qi of the middle burner spleen and stomach, and to eliminate the damp pathogen.

Collateral-unblocking herbs: even the insects come to help

The second group — herbs that invigorate blood and unblock the collaterals — includes quite a few animal medicines.

💬 Note from Doctor Luo: Qi she — when we were children we read “The Snake Catcher’s Tale” and learned that qi she is the five-step viper — venomous; it strongly dispels wind, unblocks collaterals, and settles and calms spasms. Wu shao she (black-striped snake) is non-venomous, generally used for rheumatism and skin diseases. The two together — one strong in action, one gentle — both search out wind and unblock collaterals, dispel wind and eliminate dampness. There is also di long (earth dragon, earthworm) — a very famous herb for invigorating blood and resolving stasis; at home people use di long to treat hemorrhoids. Someone may ask: isn’t your Chinese medicine making things up? Because a worm burrows through earth, you think it unblocks collaterals? No — Western medicine thinks so too. Western pharmaceuticals extract lumbrokinase from earthworms to treat cerebral thrombosis; its clot-dissolving effect is excellent. So di long genuinely does invigorate blood and unblock collaterals — this wisdom you must understand. Quan xie (scorpion) unblocks collaterals, searches out wind, and settles spasms; jiang can (batryticated silkworm) is similar to di long and quan xie; and xue jie (dragon’s blood) — a congealed tree resin — invigorates blood and disperses stasis.

Aromatic herbs: almost a complete collection of spices

The third group is the most distinctive in the whole formula — aromatic herbs (fang xiang yao).

💬 Note from Doctor Luo: Many herbs in this formula are literally spices: wu yao (lindera), mu xiang (Aucklandia), chen xiang (agarwood), ru xiang (frankincense), mo yao (myrrh), ding xiang (clove), qing pi (green tangerine peel), dou kou (cardamom), an xi xiang (benzoin) — it nearly completes the spice collection. Why so many aromatic herbs? This is a characteristic of Chinese medicine that many people no longer understand — when someone mentions aromatherapy, they think it is a foreign thing; in fact this is the aromatic therapy of Chinese medicine. Aromatic herbs do four things. First, they transform turbidity (hua zhuo qi) — removing the filthy turbid qi from the body; this is why we still wear sachets of herbs today. Second, they revive the yang qi inside the body, especially the qi of the spleen and stomach — when the spleen and stomach are trapped by dampness they lack the strength to move water; aromatic herbs revive their qi, the qi mechanism flows, and the damp pathogen dissolves. Third, they stop pain — when meridian qi and blood are stagnant and blocked, many people show nothing on the surface, but the joints ache; once the aromatic herbs go down, qi and blood flow a little more freely and the pain disappears. Fourth — most important — they move qi, invigorate blood, and unblock the collaterals — when qi and blood are blocked it hurts, which is called “pain means no free passage” (tong ze bu tong); aromatic herbs enliven qi and blood, and once the passage opens, it is called “free passage means no pain” (tong ze bu tong).

Which kinds of modern “blockage” can use this approach?

Having explained so many pathways, Doctor Luo brings it back to modern life — what illnesses does meridian blockage show up as today?

💬 Note from Doctor Luo: For example, ischemic stroke — not cerebral hemorrhage, but cerebral infarction, blockage; stasis in the head causes hemiplegia in the limbs. Because of nerve transmission problems, the qi and blood of the meridians do not flow freely, and the limbs do not move well. Note carefully: for cerebral hemorrhage you must never use this formula — that requires very careful adjustment by a Chinese medicine physician. Another example: wind-cold-damp or wind-damp-heat causing blocked meridians, joint pain, and sinew tension and contraction — some people cannot lift their arm, cannot move it; inside there is external cold pathogen and phlegm-dampness, and you cannot simply call it blood stasis. And then there is elderly people’s joint blockage — a knee that cannot move, pain with every step. None of these can be treated with a one-size-fits-all “invigorate blood and resolve stasis” approach — that is not appropriate.

Ending: the famous formula lives on today — Tong Ren Da Huo Luo Wan

Finally, Doctor Luo talked about the “modern version” of this formula.

💬 Note from Doctor Luo: In the Qing dynasty, the third-generation founder of Tongrentang adjusted this formula slightly and it became today’s Tong Ren Da Huo Luo Wan — available in pharmacies. You can ask a physician for guidance — for example, tell the doctor: “My meridians feel blocked, could I take this medicine?” You can ask. Classic Chinese medicines like this have great appeal: the thinking is sound, the combination is well designed, and the results are good — that is why they survive as classic famous formulas.

💬 Note from Doctor Luo: Chinese medicine has roughly over 500,000 formulas — a vast accumulation of experience through the ages, and many outstanding formulas among them have remarkably clear logic. A formula chosen by the Imperial Academy like this one — first support upright qi, tonify both qi and blood, then warm yang and clear heat and drain waste as the foundation, then one group of wind herbs, one group of blood-invigorating collateral-unblocking herbs, one group of aromatic herbs, to transform dampness and open the meridians — this way of thinking we must learn. When you need it, ask a nearby Chinese medicine practitioner to judge whether you can use it, because this formula is quite complex.

💬 Note from Doctor Luo: I often say: after this pandemic passes, the whole world will see — how clever our Chinese ancestors were, and what precious wealth they left us. After the pandemic the world will pay attention to Chinese herbal medicine — that is certain to happen. At that point we must also learn to use this wealth ourselves: when it becomes a ready-made pill, we should know how to use it. It would be a pity to have it sitting on pharmacy shelves, in every pharmacy, and not know how to use it. In the coming talks I will introduce more of these ready-made Chinese medicines — once you understand them, regulating many people’s bodies will become simpler and simpler.

If you have severe meridian blockage and all kinds of “no passage” problems, then slowly resolving the blood stasis and clearing the phlegm-dampness can bring many improvements — this “four-pathway thinking” of the Ming Imperial Academy is the master key prepared for exactly this kind of complex blockage.

Based on Doctor Luo Dalun’s Chinese medicine lecture series — ready-made medicine collection · Da Huo Luo Dan: the classic formula logic for transforming phlegm-dampness and unblocking the meridians.