Dr. Langsjoen (pronounced “Lang-shin”) was the cardiologist, working together with Dr. Karl Folkers, who championed the clinical effects of adjuvant treatment of heart failure patients with Coenzyme Q10 supplements and who carried out the first long-term human double-blind, controlled heart failure study with Coenzyme Q10 in the United States.
The data from Dr. Langsjoen’s eight-year study, 1985-1993, showed that Coenzyme Q10 supplementation is safe and effective as an adjunctive treatment for a broad range of cardiovascular diseases.
Dr. Langsjoen’s son, Dr. Peter H. Langsjoen, has continued his father’s work in cardiology.