Mr. Lin · Vancouver
Age 56 · Mild asthma + seasonal cough · 9 months on Pyunkang-Hwan
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.
Mr. Lin grew up in Taipei with mild childhood asthma. After moving to Vancouver in his thirties, the dry, cold winters brought a chronic seasonal cough that his pulmonologist managed with a daily inhaled corticosteroid plus a rescue inhaler.
What the years before looked like
By his fifties he was avoiding stairs, declining hikes with his children, and breathing through his mouth in his sleep. His FEV1 was stable but his daily energy wasn't.
His pulmonologist was clear that the inhaler regimen was correct — there wasn't a clinical case for changing it. But neither of them had a good answer for the slow loss of stamina.
Adding Korean medicine, alongside the inhaler
Mr. Lin's brother, who lives in Seoul, sent him a bottle of Pyunkang-Hwan and the third lecture in Dr. Seo's series. He continued the inhaled corticosteroid; the formula was an addition, not a replacement.
Months 1–3
The first month, sleep deepened — he stopped waking at 3 a.m. with a dry cough. By month two, he started a slow morning walk; by month three, the walk was a daily 30 minutes.
Where he is at nine months
Nine months in, he walks 5 km a day. His pulmonologist has not changed the prescription. Mr. Lin doesn't claim the formula "fixed his asthma" — he claims it gave the rest of his life back to him while the inhaler keeps doing its job.
Pyunkang-Hwan, the formula in this story
Pyunkang-Hwan is the same daily formula every customer in our stories was taking. Outcomes vary from person to person.
Pyunkang-Hwan