Easy Guide to Buying Stomach Medicine in Japan for Foreigners

To fully enjoy Japan’s beautiful scenery, captivating culture, and above all, its delicious cuisine, good health is essential. However, unfamiliar food, a new environment, jet lag, and the start of a new season like spring can unknowingly become sources of stress, putting a strain on our digestive system. Are you suffering from uncomfortable symptoms like indigestion, stomach pain, heartburn, dyspepsia, or bloating? It would be a shame if you couldn’t fully enjoy your precious trip to Japan due to feeling unwell.
In this article, we’ll introduce you to excellent gastrointestinal medicines readily available at Japanese pharmacies, helping foreign tourists stay comfortable and worry-free during their stay. Japanese stomach medicines are globally recognized for their high quality, with many people experiencing their effectiveness firsthand. By the time you finish reading this article, you’ll be able to find the perfect “Japanese stomach medicine” for your symptoms and alleviate one source of travel anxiety.
Contents
Familiar Overseas Stomach Medicines and Japanese Alternatives
Overseas, medicines containing specific ingredients tailored to symptoms are widely used. For example, Tums, which rapidly neutralizes stomach acid with calcium carbonate, or Carafate (or Gaviscon), containing sucralfate to protect the stomach lining, are common. Many people also rely on Gas-X, whose main ingredient is dimethicone (simethicone), to relieve bloating.
If you’re looking for alternatives to these medicines in Japan, please refer to the comparison table below.
- Alternative for Tums: Cabagin Kowa α
- Alternative for Gaviscon / Carafate: Sucralate (Liquid/Tablets)
- Alternative for Gas-X (Dimethicone): Gasptan
Now, let’s take a closer look at what symptoms each medicine can help with.
Reliable Gastrointestinal Medicine Lineup Available in Japan
1. Neutralizes Stomach Acid and Repairs the Stomach Lining: Cabagin Kowa α

What it helps with: Indigestion, stomach pain, heartburn, overeating, excessive drinking, dyspepsia
Product Features For those looking for a role similar to Tums, used overseas for hyperacidity and heartburn, the familiar “Cabagin Kowa α” is highly recommended in Japan. In addition to ingredients that neutralize stomach acid (antacids), it contains MMSC (Methylmethionine Sulfonium Chloride) to repair damaged stomach lining. It also includes digestive enzymes, making it effective for a heavy stomach after overeating.
Recommended Scenes It’s perfect for when you’ve enjoyed a lot of delicious Japanese food, or when your stomach feels burdened by irregular meals, and you want to reset your stomach discomfort with a feeling similar to Tums.
2. Directly Protects and Repairs Damaged Stomach Lining: Sucralate Liquid / Sucralate Tablets

What it helps with: Stomach pain, heartburn, acid reflux sensation, stomach pain when hungry
Product Features Gaviscon and Carafate are known overseas as gastric mucosal protective agents. Lion’s “Sucralate” series shares the same main ingredient, “sucralfate,” as these. Sucralfate directly adheres to the affected area damaged by stomach acid, forming a barrier to protect and promote repair.
Recommended Scenes It is highly effective for sharp stomach pains or discomfort felt on an empty stomach. If you’re looking for quick relief, the liquid type is recommended, while the tablet type is convenient for portability.
3. Relieves Bloating Caused by Gas: Gasptan

What it helps with: Bloating (abdominal distension), trapped gas
Product Features Kobayashi Pharmaceutical’s “Gasptan” effectively contains “dimethicone,” an antifoaming agent used in overseas products like Gas-X. By breaking down gas bubbles accumulated in the intestines, it alleviates that “full and tight” feeling in your stomach. A common feature is its chewable type, which can be taken without water.
Recommended Scenes When you feel bloated and uncomfortable while traveling, or when you have trapped gas. It’s an especially reassuring ally during travel when dietary changes can make you more prone to gas.
4. Improves Intestinal Environment: The Guard Kowa Seicho Tablet α3+

What it helps with: Loose stools, constipation, bloating, intestinal regulation
Product Features This is an intestinal regulator formulated with beneficial bacteria such as natto bacteria and lactic acid bacteria, in addition to ingredients that aid stomach function. It’s suitable for those who want to fundamentally improve their intestinal health with probiotics.
Recommended Scenes Recommended for those whose stomach condition tends to become unstable due to environmental changes, or for those who want to maintain their condition during long trips.
To Fully Enjoy Your Trip to Japan
Japan’s charm is endless, but if you fall ill, your precious experiences can be cut in half. The products introduced here—Cabagin Kowa α 100 tablets, Sucralate G, Gasptan, and The Guard Kowa Seicho Tablet α3+—are strong allies that support you with different approaches against gastrointestinal discomfort that may arise during your travels. Please choose the optimal “Japanese stomach medicine” according to your symptoms and needs, and continue your journey with peace of mind.
If you experience symptoms such as indigestion, stomach pain, heartburn, dyspepsia, bloating, or stress-induced gastritis during your stay in Japan, please refer to this article to choose the appropriate medicine. We sincerely hope you’ll enjoy Japan’s culture and food to the fullest in comfortable health, creating unforgettable memories.

At BLEZ Pharmacy in Asakusa, we stock not only the products introduced here but also other essential medicines. Whether you’re staying in Tokyo, Osaka, Kyoto, or anywhere else in Japan, online consultations and orders are available. We also offer rapid delivery, with some areas receiving orders as early as the next day. Furthermore, we provide support for online consultations with English-speaking doctors, helping ensure you receive appropriate and reliable care. For more details, please feel free to contact us via phone, LINE, X(Twitter), Instagram, WeChat, or other channels.





