Nausea and Vomiting Treatment in Patong, Phuket: Same-Day Antiemetics, IV Fluids and Diagnosis 24/7

Clinically reviewed by the Doctor Patong Takecare Clinic medical team.

Nausea is the urge to vomit; vomiting is the forceful return of stomach contents. In Patong the usual culprits are food poisoning, gastroenteritis, motion sickness from boats or scooters, hangover, migraine, pregnancy, vertigo and, in fever cases, dengue. We assess you within an hour, give intramuscular or intravenous antiemetics such as ondansetron, replace fluids, and screen for surgical, cardiac or neurological causes that need hospital care.

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Vomiting is one of the most common reasons travellers walk into our Patong clinic. Most cases are short and self-limiting, but a handful hide something serious: appendicitis, dengue, diabetic ketoacidosis, an inferior wall heart attack, or hyperemesis in early pregnancy. Our job is to settle the nausea quickly, rehydrate you, and rule out the dangerous causes before sending you back to your villa or hotel.

Common causes we see in Patong

The gut is the most frequent source. Acute gastroenteritis and food poisoning lead the list, often paired with diarrhoea (see our diarrhoea page and food poisoning page). Reflux and peptic ulcer disease give nausea with burning epigastric pain. Surgical conditions like acute appendicitis, pancreatitis, cholecystitis and bowel obstruction begin with vague nausea and progress to localised pain, fever or bilious or faeculent vomit. Hepatitis presents with jaundice and right upper quadrant ache.

The nervous system is the second source. Migraine attacks bring throbbing one-sided headache, light sensitivity and vomiting. Vertigo from BPPV, vestibular neuritis or labyrinthitis triggers spinning and repeated vomiting. Motion sickness from long-tail boats, scooter rides on hill roads, and long-haul flights is part of daily Phuket life. Early-morning vomiting with headache and focal weakness suggests raised intracranial pressure, and fever with neck stiffness points to meningitis.

Pregnancy must always be considered in women of reproductive age. First-trimester morning sickness peaks between week six and twelve. Hyperemesis gravidarum is the severe form with weight loss, ketones in urine and dehydration that needs intravenous treatment. Other causes include alcohol intoxication and hangover (see our hangover IV drip), medications such as opioids, antibiotics or starting SSRIs, metabolic emergencies like diabetic ketoacidosis and uraemia, heat illness (see heat stroke), dengue (see our fever page), and cardiac events. An inferior wall myocardial infarction in women can present with nausea and sweating alone, with no chest pain.

How we assess you

We take a focused history covering timing, frequency, the content of the vomit, associated pain, fever, headache, last menstrual period, recent meals, alcohol intake and drugs. We check vital signs and hydration, examine the abdomen for tenderness or peritonism, and do a neurological screen if the headache or balance is the dominant complaint. Investigations are selective: finger-prick glucose, urine pregnancy test, urine ketones, ECG if the picture could be cardiac, full blood count, urea and electrolytes, liver function, lipase if pancreatitis is suspected, and a dengue NS1 antigen test if fever is present.

Antiemetic options at the clinic

Drug	Best for	Cautions	Pregnancy
Ondansetron 4 to 8 mg IV, oral or wafer	Acute gastroenteritis, food poisoning, post-operative	QT prolongation, electrolyte abnormalities	After first trimester if severe
Metoclopramide 10 mg IV or oral	Gastroparesis, migraine	Extrapyramidal effects, restless legs	Avoid first trimester
Cyclizine 50 mg oral or IM	Motion sickness, vertigo, gastroenteritis	Drowsiness, dry mouth	Generally safe
Promethazine 25 mg oral or IM	Motion sickness, vertigo, mild gastroenteritis	Avoid in elderly, sedation, anticholinergic load	Use with caution
Pyridoxine plus doxylamine	Pregnancy nausea, first-line	Mild drowsiness	First-line in pregnancy

If you cannot keep fluids down, we give one to two litres of Ringer’s lactate or normal saline. Migraine vomiting gets a triptan paired with an antiemetic (see our migraine page). Motion sickness responds to cyclizine taken before travel or a scopolamine patch behind the ear. Hangover is treated with our hangover IV drip protocol. Vertigo is managed with betahistine and a sedating antihistamine.

Warning signs that need urgent care

Red flags: vomiting bright red blood or coffee-grounds material, bilious or faeculent vomit, vomiting that does not stop after 24 to 48 hours, severe abdominal pain, severe headache with neck stiffness or photophobia, chest pain or sweating in anyone over 40, pregnancy with persistent vomiting or pregnancy beyond 20 weeks with new vomiting, a diabetic patient with vomiting and possible ketoacidosis, drowsiness or confusion, and recent head injury.

See a doctor if: you cannot keep sips of water down for more than four to six hours, you are passing very little urine, your eyes look sunken, your heart is racing, you have a fever above 38.5 C, you are pregnant, you are diabetic, or your child is under two years old.

Prevention and early self-care

Most travel nausea is preventable with timing and small changes. For boat trips and long scooter rides, take cyclizine 30 to 60 minutes before departure, sit where motion is least felt, and look at the horizon. Drink small frequent sips of oral rehydration salts when you feel queasy rather than gulping plain water. Moderate alcohol with food and water between drinks. If you are pregnant, eat dry crackers before getting out of bed and split meals into six small portions. Wash hands before eating and avoid undercooked seafood or buffet food left in the sun.

Prevention summary: cyclizine before boats and scooters, scopolamine patch for known motion sickness, oral rehydration salts at the first sign of an upset stomach, food safety on street food, alcohol moderation, and early antenatal review if you are newly pregnant.

Summary

Nausea and vomiting in Patong are usually a passing problem from a meal, a boat, a hangover or a stomach bug. A small number of cases are surgical, cardiac, neurological or pregnancy-related, and these need fast assessment. We aim to control symptoms within minutes, rehydrate within an hour, and decide whether you are safe to go home or need hospital onward referral.

“Our priority is to stop the vomiting, replace fluids, and screen for the few causes that cannot wait. Most travellers feel well enough to return to their holiday by the end of the visit.” Doctor Patong Takecare Clinic medical team.

Frequently asked questions

When should I worry about vomiting in Phuket?

Worry if vomiting lasts more than 24 hours, you cannot keep water down, you have severe abdominal pain, blood in the vomit, a high fever, severe headache, chest pain, or you are pregnant or diabetic. These warrant same-day clinic review.

I get sick on scooters and long-tail boats. What can I take?

Cyclizine 50 mg taken 30 to 60 minutes before travel works for most people. A scopolamine patch behind the ear lasts up to three days and is excellent for island-hopping trips. Eat a light meal first, avoid alcohol, and sit facing forward.

Which anti-sickness medication is safe in pregnancy?

Pyridoxine (vitamin B6) combined with doxylamine is the international first-line and is safe in early pregnancy. Cyclizine and promethazine are also acceptable. Ondansetron is reserved for severe cases after the first trimester. We assess hydration and check urine ketones before deciding.

Is ondansetron safe for everyone?

Ondansetron is very effective but can prolong the QT interval on the ECG. We avoid it in patients with known long-QT syndrome, severe electrolyte disturbance, or who take other QT-prolonging drugs. In these situations we use cyclizine or metoclopramide instead.

Do you treat hangover vomiting differently?

Yes. A hangover protocol uses intravenous fluids with vitamins, an antiemetic such as ondansetron, an antacid, and a non-opioid analgesic. Symptoms usually settle within 30 to 45 minutes. See our hangover IV drip page for the full protocol.

Could vomiting and abdominal pain mean dengue?

Yes. In Phuket, persistent vomiting combined with abdominal pain during a fever is a recognised dengue warning sign. We run a finger-prick NS1 antigen test and full blood count, and arrange hospital review if platelets are dropping or signs of plasma leak appear.

Sources

NICE CKS: Nausea and Vomiting in Adults | NHS: Vomiting in adults | ACOG: Morning Sickness

Same-day relief, 24/7: WhatsApp +66 95 073 5550 | Call +66 81 718 9080 | Find us on Maps

Nausea, vomiting, antiemetic, ondansetron, metoclopramide, cyclizine, promethazine, gastroenteritis, food poisoning, dengue, motion sickness, hyperemesis gravidarum, dehydration, intravenous fluids, Patong, Phuket