Mounjaro in Japan (Tirzepatide)｜Prescription at Our Tokyo Clinic or Online, Delivered Nationwide
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What is Mounjaro?
Mounjaro (Japanese name: マンジャロ) contains tirzepatide, the injectable widely known as a “weight-loss shot” or “skinny jab”. It acts on the GLP-1 receptor and, in addition, on the GIP (glucose-dependent insulinotropic polypeptide) receptor — the world’s first dual incretin receptor agonist.
- One injection a week: easy to fit into your routine, so it is simpler to keep going long term.
- Pre-filled pen: simple to operate — anyone can give the injection themselves.
- Very little pain: the needle is extremely fine, and most people barely feel it.
- Appetite control: helps you feel less hungry, so eating less comes naturally.
- Metabolic support: helps your body burn fat more efficiently.
- When you may notice a change: results vary from person to person. Many people begin to notice a difference after about one to two weeks, and the change in weight tends to become clearer after a month or more. Using it steadily, without gaps, is recommended.
Prices (tax included)
| Items | 1 month (4 pens) | 3-month plan (12 pens) |
|---|---|---|
| Mounjaro 2.5 mg | JPY 16,500 / month | JPY 46,500 (JPY 15,500 / month) |
| Mounjaro 5 mg | JPY 28,000 / month | JPY 81,000 (JPY 27,000 / month) |
| Mounjaro 7.5 mg | JPY 40,000 / month | JPY 117,000 (JPY 39,000 / month) |
| Mounjaro 10 mg | JPY 49,000 / month | JPY 144,000 (JPY 48,000 / month) |
| Mounjaro 12.5 mg | JPY 58,000 / month | JPY 171,000 (JPY 57,000 / month) |
| Mounjaro 15 mg | JPY 68,000 / month | JPY 201,000 (JPY 67,000 / month) |
| Prescription certificate in English (English medical certificate / proof of prescription) | JPY 3,000 | — |
*Consultation fee: JPY 0 (free)
What is and is not included, and what to check when comparing figures, is set out in Mounjaro price in Japan. If the Japanese pen is new to you, see how to use the Japanese Mounjaro pen.
Who is Mounjaro for?
Mounjaro may suit you if you are:
- Stuck at a plateau: diet and exercise alone are no longer moving the number on the scale.
- Finding it hard to keep going: you have tried to lose weight several times but always gave up part-way.
- Flagged at a health check: you have been told your weight is above the healthy range.
- Concerned about the health risks of excess weight: such as high blood pressure, high cholesterol or type 2 diabetes.
- Not willing to go hungry: you would rather not put yourself through the stress of an extreme diet.
- Looking for a medically supervised approach: you want a method with medical evidence behind it, guided by a doctor.
Side effects and precautions
Common side effects
The most common side effects are gastrointestinal: nausea, vomiting, diarrhoea, constipation, reduced appetite and abdominal discomfort. These are usually mild to moderate and tend to ease within a few weeks as your body adjusts to the medicine or to a higher dose. Rare but important side effects include acute pancreatitis and gallbladder disease; low blood sugar can occur when Mounjaro is used together with other glucose-lowering medicines. If you develop unusual symptoms such as severe, persistent abdominal pain, stop using it and seek medical attention immediately.
Who should not use Mounjaro (contraindications)
- Anyone who is pregnant, planning a pregnancy or breastfeeding
- Anyone with a personal or family history of medullary thyroid carcinoma, or with multiple endocrine neoplasia syndrome type 2 (MEN 2)
- Anyone who has had a serious allergic reaction to any ingredient of this medicine
- Anyone with a history of pancreatitis or severe gastrointestinal disease (please tell the doctor at your consultation)
Important note about approved use
In Japan, Mounjaro is approved as a treatment for type 2 diabetes. Using it for weight management is off-label use and is provided as self-pay (non-insured) care, prescribed only after a doctor has assessed you in person or online. We dispense genuine brand-name medicine obtained through Japan’s regular pharmaceutical distribution channels.
Two Easy ways to receive your prescription.
You can either visit our clinic in Tokyo in person or complete an online consultation to have your medication delivered directly to your hotel.
Choose whichever suits you best.
Visit Our Clinic in Tokyo (1 min from Ichigaya Station)
We see patients by appointment only. You can check live availability online — just tap “◎” to pick a date and time that works for you.
👉 Not sure how it works? See our step-by-step booking guide.
（The booking system supports English — tap “LANGUAGE” at the top right and select English. ）
Please arrive at the clinic on time for your appointment.
Bring your passport: We need to inspect your original passport to verify your identity.
Acconmanying guests: Our waiting area is limited, so please keep the number of people accompanying you to a minimum.
You will be asked to fill in a short medical questionnaire.
Our staff will assist you in English, so please don’t worry.
Once the questionnaire is reviewed, the doctor will see you.
Ask anything: if you have any concerns or would like more details, feel free to ask the doctor.
Language: An English interpreter on our staff joins the consultation when available; otherwise we use a voice-translation tool. Japanese is not required.
Once prescribed, you can recieve and take your medication home the same day.
Optional extras: An English prescription certificate and an insulated cooler bag are available on site — just ask our staff.
Payment: we accept cash and major credit cards.
Address: 4F Ichigaya Hachimancho Building, 11-1 Ichigaya Hachimancho, Shinjuku-ku, Tokyo 162-0844
Show this to your taxi driver:
〒162-0844 東京都新宿区市谷八幡町11-1 市ヶ谷八幡町ビル4階
Opening hours: 10:00 – 18:00
Closed: Wednesdays, New Year holidays, and occasionally for staff training
Getting here:
- JR Chuo-Sobu Line: About a 2-min walk from Ichigaya Station (市ヶ谷駅)
- Tokyo Metro Namboku Line/ Yurakucho Line, Toei Shinjuku Line:
About a 1-min walk from Exit 7 of Ichigaya Station (市ヶ谷駅)
Online Prescription — Delivered Anywhere in Japan
*Flat delivery fee of JPY 1,000 anywhere in Japan
You can contact our clinic directly via our official WhatsApp or LINE account. Message us and send the word “Mounjaro”. A member of our team will reply as soon as possible during business hours.
You are very welcome to ask questions even if you have not decided to purchase yet.
Please note: to ensure smooth delivery, please contact us at least 3 days before your preferred delivery date (at least 14 days for Okinawa and Hokkaido, where delivery takes longer).
Opening hours: 10am – 6pm (closed on Wednesdays and over the New Year holidays)
Once you have messaged us, we will guide you through the rest of the process in the chat:
Identity check (required): For medical safety, we need to confirm your identity, so please send us a photo of your passport.
Questionnaire and precautions: We will send you the questions in the chat and review the medical precautions with you.
Delivery details: We will confirm your hotel address in Japan, the recipient’s name, and your delivery date and time .
The doctor will conduct your online consultation via WhatsApp or LINE messages.
If you have any questions, please feel free to ask the doctor at any time.
After your consultation, we will send you a personal payment link in the chat.
The page shows clear photos of the medication and is straightforward to use: simply add the quantity you need to the cart and complete your payment online.
・Getting it ready: As soon as payment is confirmed, our team will pack your medication and despatch it.
・Track it: When it ships we will send you a photo of the parcel along with the tracking number, so you can track its delivery status.
How to receive it:
・Staying in a rental (Airbnb,etc.): You will need to sign for the parcel in person, so please ensure someone it at the property during the delivery window.
・Staying at a hotel: The parcel will be left at the front desk — simply ask for it when you check in or creturn to your hotel.
FAQ
- I am not in Tokyo — Osaka, Kyoto, Fukuoka, Sapporo, Okinawa. Can I still get it?
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Yes. You do not need to come to Tokyo. Have the online consultation from wherever you are in Japan — Osaka, Kyoto, Fukuoka, Nagoya, Sapporo, Okinawa, anywhere — and we deliver to your hotel or home address in Japan for a flat JPY 1,000. Please contact us at least 3 days before you need it — or at least 14 days for Okinawa and Hokkaido (Sapporo), where delivery takes longer. The only thing we cannot do is ship outside Japan. Lead times by region and how hotel delivery works are in Mounjaro outside Tokyo.
- How should I store Mounjaro?
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Keep it refrigerated at 2–8°C, in the outer carton. The Japanese labelling also allows room temperature below 30°C for up to 21 days — but treat that as a one-way, use-by window: the labelling does not describe putting a warmed pen back in the fridge, and Lilly’s guidance in other markets says not to. So a long flight is fine; the reliable plan is to keep the pens cold for the whole journey (we stock cooler bags), rather than to let them warm up and re-refrigerate at home. Never freeze them. Details: Travelling with Mounjaro.
- Can I take it on the plane back to Singapore, the U.S., or elsewhere?
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Rules differ by airline, but in general yes. A small quantity of medicine for your own use can normally be taken on board. Always pack it in your carry-on bag and never in checked luggage — the hold can get cold enough to freeze the medicine and ruin it. Injectable medicines, needles and medically necessary gel ice packs are allowed through airport security (in the U.S., the TSA requires you to declare them and present them separately for screening), so keep everything in its original packaging and tell the officer at the checkpoint.
- Do I need to do anything at customs when I take it home?
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Rules are set by the country you are entering, and they change, so please check with your own authorities before you travel. Wherever you are going, three things help: keep the medicine in its original packaging with the pharmacy label, carry a English medical certificate (we can issue one for JPY 3,000), and declare it if asked.
Singapore: the Health Sciences Authority allows travellers to bring in personal medication in the original, labelled packaging with a copy of a valid prescription or doctor’s letter, and quantities above a three-month supply are not allowed; medicines containing controlled substances need HSA approval applied for at least two weeks before arrival, so check the HSA personal-medication pages for your own situation.United States: keep the original labels and your prescription, limit the quantity to what you personally need, and declare the medicine to a CBP officer on arrival. Please note that a prescription certificate is a supporting document, not a guarantee that you will be allowed to bring the medicine in — the decision always rests with the officer on duty.
- Can I buy it tax-free?
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Unfortunately, no. Under Japanese tax laws, medicines prescribed by a doctor at a medical institution (including self-pay/out-of-pocket treatments) are not eligible for tax-free exemption or refunds. We apologize for the inconvenience.
- Can I order more or ask questions after I return home?
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Yes. Even after you return home you can keep in touch with the doctor and request a further prescription through our official WhatsApp or LINE account. (*Repeat prescriptions can be delivered to an address in Japan, or collected at the clinic on your next trip — just book an appointment.)
Whether you have questions about how the medicine is working, concerns about side effects, or you simply want to plan your next supply, please message us on WhatsApp or LINE at any time.
- I am not in Tokyo. Can I still get a prescription?
-
Yes. After an online consultation, we deliver to hotels and accommodations anywhere in Japan (flat delivery fee of JPY 1,000). Whether you are travelling in Osaka, Kyoto, Fukuoka or Hokkaido, you can complete the consultation online and receive your medication where you are staying. If you are in Tokyo, you are also welcome to visit the clinic and collect it the same day.
