Pyunkang-Hwan
50 Years of Lung-Clearing Research · Korean Medicine Heritage
Dr. Seo Hyo-seok entered Kyung Hee University's College of Korean Medicine as the top-ranked candidate in 1966 and finalised the Pyunkang-Hwan formula in 1972 — fifty years of continuous practice. A constitutional approach to rhinitis, asthma, skin discomfort, and lung wellness.
Pyunkang-Hwan
50 Years of Lung-Clearing Research · Korean Medicine Heritage
Dr. Seo Hyo-seok entered Kyung Hee University's College of Korean Medicine as the top-ranked candidate in 1966 and finalised the Pyunkang-Hwan formula in 1972 — fifty years of continuous practice. A constitutional approach to rhinitis, asthma, skin discomfort, and lung wellness.
One formula, fifty years. Rooted in Dr. Seo's research at Kyung Hee University and built around 20+ traditional Korean herbs to support the lungs, breathing, and skin from the constitutional level.
“The lung is where all meridians convene; clear the lung and many ailments resolve.”
Dr. Seo Hyo-seok entered Kyung Hee University's College of Korean Medicine as the top-ranked candidate in 1966 and completed the final form of Pyunkang-Hwan in 1972 at his father's Pyunkang clinic. Fifty years on, he has been featured on PBS public television discussing lung and respiratory wellness, and lectures at Kyung Hee University on contemporary readings of Korean medicine.
Korean medicine treats the lungs as the organ that governs respiration and the skin barrier. Pyunkang-Hwan centres on lung-clearing, supporting the upper airway, the skin, and overall immune balance together.
Learn more →Platycodon, Schisandra, Ophiopogon, Mulberry-bark, Aster, and more — combined in the proportions Dr. Seo refined over 50 years of clinical practice, sourced from Korean producers.
Learn more →Every batch is screened on intake → tested for heavy metals → verified for microbial limits and active-compound content → finished product audited by SGS. Fully traceable end-to-end.
Learn more →Selected episodes from Dr. Seo's televised lecture series on KBS / SBS. Subtitles available in Traditional Chinese, Simplified Chinese, and English.
“Every spring used to bring nonstop congestion and runny nose — even my sleep suffered. From the third month, I could finally breathe normally at night again.”
“I used to get winded just walking up stairs. After starting, my stamina gradually came back — I now walk 5 km a day without effort.”
“I couldn't get off the steroid creams. My daughter suggested I try Pyunkang-Hwan; six months in, the redness and inflammation calmed visibly and I was able to stop the steroids.”
※ Stories on this site reflect individual experiences and are not representative of expected results. Outcomes vary from person to person.
Platycodon, Schisandra, Ophiopogon — Dr. Seo on the food-as-medicine tradition and how everyday meals can support clearer breathing.
Korean medicine traces skin issues back to the lung and large-intestine meridians. A synthesis of Dr. Seo's 50 years of clinical observation.
“Cure” is a careful word. From a lung-clearing and constitutional support perspective, what can we actually do for asthma?