Trusted Digestive Care for Over 65 Years
Trusted by Generations
Weisen-U is a trusted gastrointestinal remedy with over 65 years of history, from its initial research and development to its current status as a household name. Developed to address common stomach issues, its innovative formulation has helped countless patients manage gastric discomforts effectively. Recognized by medical professionals as a valuable over-the-counter drug, Weisen-U combines science-backed efficacy with safety and reliability.
Innovative Dual-Layer Relief
Our unique dual-layer tablet design delivers multifaceted relief in one dose: the outer layer quickly neutralizes excess gastric acid and promotes digestion, while the inner core heals damaged gastric mucosa. This synergy alleviates symptoms like indigestion, stomach pains, heartburn, loss of appetite, and nausea, providing comprehensive support for digestive health.
Our History
Breakthrough Discovery
The core ingredient, Methylmethionine Sulfonium Chloride, was highlighted in a 1955 report by Stanford University School of Medicine for its ability to suppress hyperacidity, maintain healthy mucosa, and protect the stomach wall from acid damage—relieving pain and restoring balance. Its efficacy has been clinically validated by prestigious institutions, including the Department of Medicine of Keio University School of Medicine, Department of Medicine of Kanazawa University School of Medicine, Atami Stomach and Duodenal Hospital, Department of Surgery of the University of Tokyo Hospital, and the Third Department of Medicine of Kyoto Prefectural University of Medicine.
The Birth of Weisen-U
Weisen-U was developed by Kin Fung Weisen-U Co. Ltd. in collaboration with Shigaken Pharmaceutical Industrial Co. Ltd. Launched in the 1960s, it has since assisted millions with gastrointestinal problems across Asia and beyond.
Expansion to Europe & the Americas
Gaining popularity in Hong Kong, Macau, and Southeast Asia during the 1960s, Weisen-U expanded to Europe and the Americas in the 1970s.
Entry into Mainland China
As one of the first imported gastrointestinal drugs in China, it entered the Mainland market in the early 1980s.
Popular in Global Community
Since the 1990s, it has become popular among Chinese communities in Australia, Canada, the U.S., and Europe amid waves of immigration.
Modern Era & Continued Leadership
Over decades, Weisen-U has evolved into a leading brand, maintaining its exceptional stability and safety as a go-to over-the-counter solution.
Winning Formula with Unparalleled Quality
No. 1 Selling Gastrointestinal Drug in Hong Kong (2014–2025)*
Headline No.1 award (2023)
“Most Favourite Gastrointestinal Product Award” (western medicine category) (2016-2020)
No. 1 Selling Gastrointestinal Drug in Hong Kong (2014–2025)*
Headline No.1 award (2023)
“Most Favourite Gastrointestinal Product Award” (western medicine category) (2016-2020)
Market Leadership Award: Market Leadership in Greater Bay Area Gastrointestinal Drug by HKIM (2024,2025)
“Diamond Award” Watsons - Health, Wellness & Beauty Award (2023 & 2016)
Hong Kong Top Brand (2016-2024)
Market Leadership Award: Market Leadership in Greater Bay Area Gastrointestinal Drug by HKIM (2024,2025)
“Diamond Award” Watsons - Health, Wellness & Beauty Award (2023 & 2016)
Hong Kong Top Brand (2016-2024)
Silver Award for Trademark Brand Cultivation in the 2nd Guangdong-Hong Kong-Macao Greater Bay Area High-Value Trademark Brand Cultivation Competition (2024)
Winner of “Economic Digest Outstanding Brand Awards 2018” (western medicine category) (2018)
Silver Award for Trademark Brand Cultivation in the 2nd Guangdong-Hong Kong-Macao Greater Bay Area High-Value Trademark Brand Cultivation Competition (2024)
Winner of “Economic Digest Outstanding Brand Awards 2018” (western medicine category) (2018)
Silver Award for Trademark Brand Cultivation in the 2nd Guangdong-Hong Kong-Macao Greater Bay Area High-Value Trademark Brand Cultivation Competition (2024)
Winner of “Economic Digest Outstanding Brand Awards 2018” (western medicine category) (2018)
No. 1 Selling Gastrointestinal Drug in Hong Kong (2014–2025)*
Market Leadership Award: Market Leadership in Greater Bay Area Gastrointestinal Drug by HKIM (2024,2025)
Silver Award for Trademark Brand Cultivation in the 2nd Guangdong-Hong Kong-Macao Greater Bay Area High-Value Trademark Brand Cultivation Competition (2024)
Headline No.1 award (2023)
“Diamond Award” Watsons - Health, Wellness & Beauty Award (2023 & 2016)
Winner of “Economic Digest Outstanding Brand Awards 2018” (western medicine category) (2018)
“Most Favourite Gastrointestinal Product Award” (western medicine category) (2016-2020)
Hong Kong Top Brand (2016-2024)
*Source: Data reported by Nielsen and IQVIA through its MarketTracker Service for Antacid Category from April 2014–March 2025, for Total Hong Kong.
(Copyright © 2019, The Nielsen Company and 2020–2025 IQVIA)
Decades of Quality, A Future of Innovation
As a dedicated guardian of digestive health for Hong Kong and global communities, Weisen-U upholds the highest standards. In 2019, we partnered with a Hong Kong-based pharmaceutical manufacturer equipped with PIC/S GMP facilities and cutting-edge technology to ensure long-term supply stability and superior production quality.
Delivering Premium Products with Proven Efficacy, Safe Ingredients, and Consistent Composition