Vomiting in Tokyo? What to Do Right Now

Vomiting while traveling is unpleasant and can be worrying — especially when you're far from home. Most vomiting in travelers is mild and settles within a day.

This page helps you decide what to do next — rest at your hotel, arrange a same-day doctor visit, or seek emergency care. TOKYO CLINIC sends English-speaking doctors directly to your hotel in central Tokyo, usually within 60–90 minutes.

At a Glance

  • English-speaking physician
  • Same-day hotel visits
  • Physical examination
  • Anti-nausea medication may be provided
  • Medical certificates available
  • Hospital referral when necessary

What Should I Do Now?

Occasional vomiting, otherwise feeling okay Sip clear fluids slowly, rest, and monitor for a few hours.
Repeated vomiting, or unable to keep fluids down Arrange a same-day medical assessment — message us on WhatsApp and a doctor can visit your hotel.
Blood in vomit, severe pain, or signs of dehydration Call 119 immediately, or ask hotel staff to call for you.

When Should I Seek Emergency Care?

Call 119 for an ambulance (or ask hotel staff to call) if your vomiting comes with any of the following:

  • Vomiting blood, or vomit that looks like coffee grounds
  • Severe abdominal pain along with vomiting
  • Signs of severe dehydration — dizziness, confusion, or little to no urination
  • High fever with a stiff neck, severe headache, or confusion
  • Vomiting following a head injury
  • Unable to keep any fluids down for more than 24 hours

Can I Stay in My Hotel?

If none of the emergency signs above apply, you can usually stay at your hotel while a doctor examines and treats you. If your symptoms suddenly get worse, or you notice any of the emergency signs above — even while you're waiting for the doctor — call 119 right away rather than wait for us. TOKYO CLINIC is here to help with non-emergency care; it should never delay emergency treatment.

How Does a Doctor Visit Work?

  1. Contact TOKYO CLINIC by WhatsApp or email with your symptoms and hotel name.
  2. A doctor visits your hotel, typically within 60–90 minutes.
  3. Examination, and testing if appropriate.
  4. Anti-nausea medication and rehydration advice are provided or arranged on the spot in most cases.
  5. A hospital referral is arranged if your condition needs further care.
  6. A medical certificate is issued on request, for insurance or airline purposes.

Common Causes of Vomiting

  • Food poisoning / gastroenteritis — from a change in food or water; common among travelers.
  • Motion sickness — from flights, trains, or unfamiliar transportation.
  • Overeating or alcohol — unfamiliar food, large meals, or drinking.
  • Migraine — can cause nausea and vomiting along with headache.
  • Heat exhaustion — Tokyo summers (June–September) are hot and humid.
  • Early pregnancy — for travelers who may be pregnant.

How Vomiting Is Assessed

  • History — onset, frequency, and triggers, food/water exposure, medications, in English.
  • Examination — abdominal exam, hydration status, and temperature.
  • Testing — performed in your room when appropriate.
  • Clear explanation — the doctor explains the likely cause and what it means for your trip.

Possible Treatment

  • Symptom relief — anti-nausea medication.
  • Rehydration advice — small, frequent sips of fluid or oral rehydration solutions.
  • Antibiotics — only when a bacterial infection is confirmed.
  • Hospital referral — if severe dehydration or another serious condition is suspected.

Frequently Asked Questions

How do I stay hydrated?

Take small, frequent sips of water or an oral rehydration solution rather than large amounts at once. The doctor can recommend the best approach for your situation.

Do I need antibiotics?

Only if a bacterial infection is confirmed. Most vomiting in travelers is caused by a viral illness, food, or motion sickness, and antibiotics won't help in that case.

Can I fly tomorrow?

Often yes, if your symptoms are improving and you're able to keep fluids down. The doctor can advise based on your specific case and provide documentation if needed.

Can I get a medical certificate?

Yes, for travel insurance claims or airline documentation.

Will the doctor speak English?

Yes. All doctors seeing international patients are English-speaking, from first contact to the visit itself.

Should I go to a hospital?

Not usually. Most vomiting can be safely assessed and treated at your hotel. A hospital referral is arranged only if your condition needs care beyond a house call, such as severe dehydration.

Feel Unwell in Tokyo?

Message us now — Doctor in as little as 60 minutes.

Or email tkyclnc@tokyoclinicjapan.com