Constipation is never fun, especially when you’re in a foreign country like Japan. Whether you’re visiting for a few weeks or living here long-term, not being able to go to the bathroom can be uncomfortable and even stressful. But don’t worry! Japan has many options for constipation medicine, from gentle herbal teas to stronger over-the-counter laxatives.
In this blog post, we’ll walk you through everything you need to know about constipation medicine in Japan. Let’s get started!
Why You Might Get Constipated in Japan
If you’ve recently moved to or are traveling in Japan and find yourself experiencing constipation, you’re not alone. A few lifestyle changes that come with being in a new country can affect your digestion. Here are some common reasons:
1. Change in Diet
Japanese food is healthy, but very different from what many people are used to. You might be eating more white rice, noodles, or processed convenience store meals—and fewer whole grains or high-fiber foods.
Tip: Slowly add fiber-rich Japanese foods like vegetables, seaweed, natto, or brown rice to help your digestion adjust.
2. Travel Stress or Moving Anxiety
Adjusting to a new environment—whether you’re visiting, studying, or living in Japan—can cause stress. Stress affects your gut and can slow down bowel movements.
Tip: Try to maintain a routine, get enough sleep, and take time to relax. Even short walks or deep breathing can help calm your body and support digestion.
3. Not Enough Water
It’s easy to forget to drink enough water, especially when you’re out all day sightseeing, commuting, or adjusting to new work or school routines. Dehydration makes your stool dry and hard to pass.
Tip: Carry a water bottle and sip throughout the day. Choose water or tea instead of sugary drinks. Warm beverages can be especially soothing.
4. Lack of Exercise
In Japan, people often sit for long hours at work, in school, or on trains. If you’re not moving your body regularly, your intestines may also slow down.
Tip: Make time for light physical activity every day. A short walk after meals, climbing stairs, or even stretching at home can boost your digestion.
Constipation in Japan is common, especially when you’re adjusting to a new lifestyle. But with a few simple changes—like staying active, drinking more water, and choosing fiber-rich foods—you can support regular and healthy digestion.
Popular Constipation Medicines in Japan
There are several types of constipation medicines you can find in Japan. Here are the most common ones, with their Japanese names, ingredients, and what they do:
1. Krupuran (クルプラン)
- Type: Mild laxative
- Main ingredient: Sodium picosulfate
- Effect: Stimulates the colon to help move waste
- Use: Usually taken before bed; works in 6–12 hours
Krupuran is great if you’re looking for something effective but gentle. It’s often recommended by pharmacists.
2. Ohta Isan Shokuyou Senna Tea (太田胃散 食養センナ茶)
- Type: Herbal tea laxative
- Main ingredient: Senna leaf
- Effect: Promotes bowel movement naturally
- Use: Drink as tea; works overnight
Senna tea is a traditional herbal solution. Many people prefer this for its natural feel.
3. Colac (コーラック)
- Type: Over-the-counter laxative
- Main ingredient: Bisacodyl
- Effect: Stimulates the intestines directly
- Use: Stronger than mild options; works overnight
Colac comes in various strengths (Colac II, Colac A, etc.). Go for milder versions unless you’re really backed up.
4. Magcorol (マグコロール)
- Type: Osmotic laxative
- Main ingredient: Magnesium oxide
- Effect: Pulls water into the intestines to soften stools
- Use: Used in hospitals and also available for home use
Magnesium-based laxatives are often given for regular constipation, especially in older adults or those who need something long-term.
5. Lactulose Syrup (ラクツロースシロップ)
- Type: Gentle syrup
- Effect: Softens stool and promotes regular movement
- Prescription: Sometimes requires a doctor’s note
This is popular for babies and elderly people. If you need something very gentle, this is a good choice.
Where to Buy Constipation Medicine in Japan
You can find most over-the-counter constipation medicines at:
Drugstores (薬局 Yakkyoku or ドラッグストア)
Just head to the digestive medicine section. If you’re not sure, ask a staff member by saying:
「便秘の薬はありますか？」
(Benpi no kusuri wa arimasu ka?)
“Do you have medicine for constipation?”
Or point to your stomach and say “Benpi…” (constipation). Most staff are used to helping tourists.
How to Read the Label (Helpful Japanese Words)
Japanese medicine packaging may be confusing at first, but here are key words to look for:
| Japanese | English |
| 便秘 (Benpi) | Constipation |
| 下剤 (Gezai) | Laxative |
| 緩下剤 (Kangezai) | Mild laxative |
| 刺激性下剤 (Shigekisei gezai) | Stimulant laxative |
| 浣腸 (Kanchou) | Enema |
| 成分 (Seibun) | Ingredients |
| 使用方法 (Shiyou Houhou) | How to use |
Natural Remedies for Constipation in Japan
If you prefer not to rely on medicine or want to support your digestive health in a more natural way, Japan offers many traditional foods and habits that can help. These simple remedies can ease constipation and keep your gut healthy.
1. Umeboshi (梅干し – Pickled Plum)
Umeboshi are salty, sour pickled plums known for their powerful health benefits. They help stimulate digestion, improve gut bacteria, and can even relieve mild constipation.
Tip: Eat one umeboshi in the morning with warm rice or hot water. It’s a strong flavor, but very effective!
2. Miso Soup (味噌汁)
Miso soup is made from fermented soybeans and is rich in probiotics, which are good bacteria that support digestion. It’s also hydrating and easy on the stomach.
Tip: Have a bowl of warm miso soup daily, especially in the morning or with lunch. Add vegetables or seaweed for extra fiber.
3. Seaweed (Wakame, Kombu)
Seaweed is packed with fiber, minerals, and natural compounds that support healthy bowel movements. It helps soften stool and makes it easier to pass.
Tip: Add wakame to soups and salads, or use kombu when cooking rice or broth. It’s a simple way to boost your fiber intake naturally.
4. Natto (納豆 – Fermented Soybeans)
Natto is a traditional Japanese superfood known for its strong smell and sticky texture. It’s full of probiotics and enzymes that help break down food and promote regular bowel movements.
Tip: Eat natto with rice for breakfast. You can add soy sauce, green onions, or mustard to improve the flavor if you’re new to it.
5. Warm Water in the Morning
Starting your day with a glass of warm water can gently wake up your digestive system. It helps rehydrate your body after sleep and can stimulate a morning bowel movement.
Tip: Drink 1 glass of warm (not hot) water on an empty stomach as soon as you wake up. You can also add a slice of lemon for extra benefits.
These traditional Japanese remedies are easy to include in your daily routine and support natural digestion without the need for medicine. Try adding one or two of these habits to your day and see how your body responds!
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Lifestyle Tips for Regular Bowel Movements
Adjusting to a new lifestyle, especially in a place like Japan with different food and daily routines, can sometimes lead to constipation. Try these easy and effective tips to stay regular and feel your best every day:
✅ Stay Hydrated
Drinking enough water is one of the easiest ways to prevent constipation. Water helps soften your stool, making it easier to pass.
Tip: Aim for 6 to 8 glasses of water a day. Carry a water bottle with you, especially when exploring or commuting in Japan, where vending machines are everywhere but bottled water can be expensive.
✅ Eat More Fiber
Fiber keeps your digestive system moving. It adds bulk to your stool and helps you go more regularly.
Tip: Add more fruits (like apples and bananas), vegetables (like spinach and carrots), whole grains (like brown rice and oats), and legumes (like beans and lentils) to your diet.
In Japan, try fiber-rich local foods like:
- Kinpira gobo (burdock root stir fry)
- Natto (fermented soybeans)
- Miso soup with vegetables
✅ Move Your Body
Physical activity helps your intestines stay active. Sitting for long hours can slow digestion and cause constipation.
Tip: Take a daily walk, stretch, or try simple exercises at home. Even walking to the train station or exploring local parks in Japan can make a big difference.
✅ Don’t Ignore the Urge
When you feel the need to go, don’t wait. Delaying can lead to harder stools and make it more difficult to pass later.
Tip: Get familiar with clean public restrooms in Japan—many stations, department stores, and convenience stores have them. Some even have bidets, which can make the experience more comfortable.
By following these simple lifestyle tips, you can improve your digestion, prevent constipation, and feel healthier overall—whether you’re living in Japan or just visiting. Make small changes today, and your gut will thank you!
When to See a Doctor in Japan
If constipation lasts more than 5–7 days, or you feel:
- Severe stomach pain
- Nausea or vomiting
- Bloody stool
- Sudden weight loss
it’s time to visit a doctor. In Japan, internal medicine clinics (内科 Naika) can help with digestive problems.
How to Say It in Japanese:
「便秘がひどくて、病院に行きたいです。」
(Benpi ga hidokute, byouin ni ikitai desu.)
“My constipation is bad, and I want to go to the hospital.”
Many clinics also offer English support, especially in Tokyo, Osaka, and Kyoto. You can also check the Japan National Tourism Organization (JNTO) website for English-speaking hospitals.
Frequently Asked Questions (FAQ)
Q1. Is constipation medicine in Japan safe for foreigners?
Yes, but always read the label or ask the pharmacist. If you’re unsure, bring a photo of the medicine you use at home.
Q2. Do I need a prescription for laxatives?
Most constipation medicines are available over the counter. Stronger or long-term options may require a prescription.
Q3. Can I bring constipation medicine from my country?
Yes, but check Japan’s drug import rules. Some medicines (like ones with codeine) are banned.
Q4. What’s the best constipation medicine in Japan?
It depends on your body. For mild cases, try Senna tea. For faster relief, Colac or Krupuran is effective.
Q5. Is it okay to use an enema in Japan?
Yes! Kanchou (浣腸) enemas are sold in most drugstores and are common for quick relief.
Final Thoughts: Don’t Panic, Japan Has You Covered
Constipation in Japan might feel awkward, but it’s very common. The country has many effective and safe options, from herbal teas to modern laxatives. With the right medicine, a healthy diet, and a bit of movement, you’ll be back to normal in no time.
Whether you’re here for a short trip or a long stay, keep this guide handy for when your digestion needs a little help.
Useful Japanese Phrases for the Pharmacy
- “Benpi no kusuri wa arimasu ka?” = Do you have constipation medicine?
- “Yowai kusuri wa arimasu ka?” = Do you have a mild medicine?
- “Ichiban ninki no benpi-yaku wa dore desu ka?” = What is the most popular constipation medicine?
Ready to feel better? Visit your nearest drugstore and get back to enjoying Japan—comfortably and confidently.
If you found this guide helpful, please share it with fellow travelers or expats in Japan!
