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Yan Hu Suo Zhi Tong Pian
(Corydalis Relaxe™)
An All Natural Chinese Herbal Supplement
Item #:
Yan Hu Suo Zhi Tong Pian (Yan Hu Suo Zhi Tong Wan, Corydalis Relaxe™, 延胡索止痛片) is a Guang Ci Tang® signature formula that includes Corydalis as the main ingredient for pain management. This Chinese herbal medicine is our choice of all natural dietary supplements for general pain management, whether pain is chronic or neuropathic, as long as Qi obstruction or Blood stasis is manifested.

Yan Hu Suo Zhi Tong Pian (Wan) Product Details
What does it do?
Life is pain. Pain is the most common reason for doctor visits. Chronic neuropathic pain alone affects over 50 million people in the USA. Pain is managed in most cases by the nonsteroidal anti-inflammatory drugs (NSAIDs) such as aspirin and ibuprofen when low or moderate pain exists. In cases of severe pain, opioid drugs such as morphine may be used after prescription. While opioid drugs are potent painkillers, they develop drug tolerance and physical dependence among other side effects. These conventional analgesics are less effective for neuropathic pain.

From the perspective of traditional Chinese medicine (TCM), pain is caused by obstruction of Qi flow or blood circulation in the affected area. Qi is a vital energy circulating in the channels around our body. Many Chinese herbs are well known in TCM to move Qi energy and invigorate the Blood and thus relieve pain. Yan Hu Suo (Corydalis Rhizome) is one of such Chinese herbs. Yan Hu Suo Zhi Tong Pian (Corydalis Relaxe™) is a Guang Ci Tang® signature formula that includes Corydalis as the main ingredient and several other Chinese herbs that reinforce the action of Corydalis.

Yan Hu Suo in TCM acts to invigorate the Blood, smooth the Qi flow, and alleviate pain. Pain management is the most conspicuous aspect of its action. Chinese herbalists have found that Yan Hu Suo is applicable to pain in a wide range of conditions and is potent compared to other Chinese herbs. Yan Hu Suo also has a good safety profile in its action. It does not induce tolerance and physical dependence, another big advantage compared to the analgesics on the market.

Scientists have worked hard to reveal how Yan Hu Suo works in modern biomedical terms. Several analgesic components have been isolated from Corydalis. A latest research that is published in 2014 and widely reported by media including Dr Oz show nicely illustrates such an effort. In the study1, scientists from China and America are able to identify DHCB (dehydrocorybulbine), a Corydalis component, as an analgesic that is effective against thermally induced acute pain, inflammatory pain, and injury-induced neuropathic pain. Furthermore, it does not cause antinociceptive tolerance. In contrast to morphine, DHCB's antinociceptive effect appears mediated by dopamine D2 receptors but not opioid receptors. It should be noted that besides DHCB, other Corydalis components like I-THP (L-tetrahydropalmatine) are also shown to act the same way to alleviate pain. These results are in consistence with what we have known in TCM about Corydalis for centuries.

In addition to Yan Hu Suo, Corydalis Relaxe™ includes 3 other Chinese herbs, Bai Zhi (Dahurian Angelica Root), Xiang Fu (Cyperus Rhizome), and Chuan Xiong (Sichuan Lovage Rhizome) to further enhance the action of Yan Hu Suo. Here, Bai Zhi disperses Wind and alleviates pain in the head region. Xiang Fu promotes Qi movement, resolves depression, regulates menstruation, and stops pain. Chuan Xiong is another famous Chinese herb that invigorates the Blood, smoothes Qi flow, and alleviates pain. It also expels Wind.

Corydalis Relaxe™ is our choice of all natural dietary supplements for general pain management, whether it is chronic pain or neuropathic pain. It is especially recommended for pain caused by Qi obstruction or Blood stasis in cases of pain in the stomach, frank region, head, and menstruation.

What is the formula composition?
A proprietary blend of
Rhizoma Corydalis yanhusuo
Radix Angelicae Dahuricae
Rhizoma Cyperi Rotundi
Rhizoma Ligustici Chuanxiong
(Yan Hu Suo)
(Bai Zhi)
(Xiang Fu)
(Chuan Xiong)
What is Available?
Guang Ci Tang® Yan Hu Suo Zhi Tong Pian (Corydalis Relaxe™) 40 grams in 200 mg 200 tablets @ 5:1 strength.

At a true 5:1 concentration, this product represents the most potent form of Yan Hu Suo Zhi Tong Pian (Wan) on the market. One tablet is equal to 1 gram of raw herb.

Please note that Guang Ci Tang® Yan Hu Suo Zhi Tong Wan in the pill form, which has the same formulation as the tablet, is discontinued.

Yan Hu Suo Zhi Tong Pian tablets are made with 100% natural herbs that are tested for authenticity, quality, and potency. A traditional water decoction is prepared with the herbs to reproduce the time-tested efficacy of the formula, and this water decoction is concentrated with our proprietary technology to form a potent extract that is made into easily absorbed tablets, which are remarkably effective, easy to use, and safe. The tablets are produced by Guang Ci Tang® in our state of the art cGMP-certified facility and imported in accordance with U.S. FDA guidelines. When you choose Guang Ci Tang® products, you are taking advantage of a wonderful fusion of science and tradition that incorporates the highest standards in the field of Chinese medicine today.

Guang Ci Tang® Advantages
so pure, so powerful, so affordable
  • Double the concentration of other Chinese herb concentrated pills
  • Pure water extract using minimal or no fillers/binders
  • No pharmaceuticals, sugar, or dyes
  • Comprehensive heavy metal testing in accordance with the US Pharmacopeia
  • Proprietary extraction and formulation technology
  • Reduced daily dose and larger pack size for longer use
  • Made in a pharmaceutical cGMP certified facility
  • Safely used in the USA since 1995

Check for an independent US lab test report.

How do I use it?
The standard dosage for Corydalis Relaxe™ is 5 tablets taken 2 to 3 times daily with or before meals. One bottle lasts users 13 to 20 days. The dose may be doubled for a quicker and stronger response as needed (e. g., in an acute phase). Consult your practitioner for precise dosage recommendations based on body weight and other factors.

Differentiation in Usage

Side Effects
Yan Hu Suo Zhi Tong Pian (Wan) has been safely used with few adverse effects when used as directed.


  • 1. Use with caution if you have heat sensation.
  • 2. Consult your herbalist or physician before use if you are taking other medicines.
  • 3. Keep out of reach of children.
Allergy Info
Corydalis Relaxe™ is gluten free

In the Media
  • 1. Zhang Y et al., A novel analgesic isolated from a traditional chinese medicine. Curr Biol. 2014 Jan 20;24(2):117-23.
Corydalis Relaxe™ (Yan Hu Suo Zhi Tong Pian) is rated 4.4 out of 5 by 5.
Rated 5 out of 5 by from Works as Stated This worked as the word out there is telling everyone to purchase. I took the exact dosage once for bad Arthritis and slight headache, and it worked faster than any of the other pain products I've taken over the years, with no stomach upset or side effects. Amazing that I only had to take it once that day. I say to get this product for any pains you have and wait for it to work better than anything else you've ever tried.
Date published: 2014-03-20
Rated 4 out of 5 by from Only been using for a week or so... I also take valium and other medicines for pain and muscle spasms, as well as curcumin and another herbal. This seems to have made the others work better or the other way around.
Date published: 2014-03-17
Rated 5 out of 5 by from seems 2 be working nicely I purchased a couple of weeks ago & have been taking the prescribed/recommended dosage. My acupuncturist cautioned me 2 be careful when mixing with western drugs & I assured him I never touch them.Strictly herbs. I did notice that I seem 2 be experiencing some tremors & chills. Whether they are result of this herb or the outside temperature not sure. Am a Vegan so very sensitive 2 everything!
Date published: 2014-03-07
Rated 4 out of 5 by from Took away dental pain I came back from the dentist after some strong work on a back molar. I took 5 of these tablets when the novacaine was wearing off. I felt a mild decrease in the pain. After a couple hours, I took 5 more and the pain was disappearing. I took 5 more a few hours later, and the pain was totally gone. It never came back. I was saved from taking NSAIDs!
Date published: 2014-02-26
Rated 4 out of 5 by from fair I bought two weeks ago.
Date published: 2014-03-30

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