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Dong-A ST

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DONG-A ST - Our Research Division focuses on the development of global new drugs.


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HOME>Research and Development>Research Achievements>Our New Drugs

Our New Drugs

Overview of Dong-A ST’s new drugs for the promotion of human health
  • Stillen
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    Unveiled domestically in December 2002, Stillen® is
    a natural-material-derived drug using mugwort ingredients, which have been used as a therapy material to treat abdominal tenderness, bloody diarrhea, and gynecological disease.

    Stillen®, which protects the mucous membranes, is highly effective in treating chronic and acute gastritis as well as gastric ulcer, infective enteric disease, and pancriatitis. In 2009, Stillen® posted about KRW85.4 billion sales domestically, making it a successful, highly marketable natural-material-derived drug.

  • Zydena
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    Unveiled in December 2005, Zydena® is the country’s first and the world’s fourth erectile dysfunction drug.

    Zydena® has been clinically proven in the domestic clinical studies and U.S. clinical phase 2 studied to offer high efficacy, few side effects, and appropriate duration time. Four years after its unveiling in 2009, Zydena® posted KRW16.3 billion sales at home, thus squarely rivaling the new drugs of multinational pharmaceutical companies

    In November 2009, we signed contracts to export Zydena® to 32 countries around the world, and its cumulative export contract worth amounted to about USD300 million, the largest for a domestic new drug.

    Zydena was released in several countries including Russia, Turkey, Malaysia, India, and Azerbaijan, followed by Brazil in 2015. Moreover, the NDA for Zydena was submitted to the US FDA in early 2015 and the US FDA approval is expected in early 2016

    For Zydena®, we are researching on expanding its indications for benign prostatic hyperplasia, pulmonary arterial hypertension, etc. We expect to expand the drug’s indications.

  • Motilitone
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    Unveiled domestically in December 2011, Motilitone is a natural-material-derived functional-dyspepsia drug manufactured using extracts of morning glory seeds and corydaline tubers.

    Functional dyspepsia is a disease in which, without particular lesions, indigestion such as premature satiety and abdominal distension continues for more than three months. As such, while the existing digestive medicines temporarily prevent functional disorder of the stomach, Motilitone has the combined advantage of improving both the funtion and motility of CTI. Also, Motilitone has been proven not to produce side effects but to have improved the bowel movement and to have drastically decreased the hypersensitivity reaction of the intestines.


  1. Introduction

    This Privacy Policy describes the personally identifiable information that Dong-A ST ("the Company") collects through our Web site located at and how we use that information. If you have any questions or comments about this Privacy Policy or our practices regarding your personally identifiable information, please contact us via email or by phone.

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This website is operated by Dong-A ST. All inquiries may be directed to:

Dong-A ST
64 Cheonhodaero, Dongdaemun-gu,
Seoul, Korea

Your use of this website is governed by these terms of use. Please take a few minutes to review these terms when using the Web site.

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