Do hangover IV drips work? A nurse’s honest answer
Do hangover IV drips work? Yes, for the symptoms: a drip rehydrates you quickly and can ease nausea and headache, so most people feel noticeably better within an hour. No, if you expect a cure: there is no good evidence that a drip clears alcohol faster, and for a mild hangover oral rehydration salts often do the same job.
The short answer
What a hangover IV drip can and can’t do
- It can replace lost fluid and salts fast, even when you are too sick to drink.
- It can ease nausea and a pounding headache, when the nurse adds medication after a health check.
- It can save a day of a short holiday that you would otherwise spend in bed.
- It can’t sober you up, remove alcohol from your blood faster or protect your liver.
- It can’t replace sleep, food and time, which are what actually end a hangover.
What is a hangover IV?
A hangover IV is a bag of sterile fluid with electrolytes, usually with added vitamins, that runs into a vein in your arm through a thin plastic tube called a cannula. A nurse puts the cannula in, checks your blood pressure and pulse first, and stays with you while it runs, typically for 30 to 60 minutes. On Koh Phi Phi our nurses do this in your hotel room, bungalow or on a boat, so you don’t have to go anywhere while you feel awful.
What is in a hangover IV drip?
Exact recipes vary between providers. A typical hangover drip contains some or all of the following. Medications are only added after the nurse has asked about allergies, other medicines and your health.
| Ingredient | What it is for |
|---|---|
| IV fluid (saline or a balanced salt solution) | The main ingredient. Replaces the water and sodium lost through sweating, peeing and vomiting. |
| Electrolytes | Salts such as sodium and potassium that your body needs to hold on to fluid and keep muscles and nerves working. |
| B vitamins | Heavy drinking lowers B vitamins. They are commonly added, although there is little proof they speed up hangover recovery. |
| Vitamin C | An antioxidant often included in “recovery” drips. Again, evidence for a hangover benefit is limited. |
| Anti-nausea medication | Only after assessment. Often the part that makes the biggest difference to how you feel. |
| Pain relief | Only after assessment, and only if it is safe with your health and any other medicines. |
You can see what goes into our own drip on the hangover IV drip page.
How does an IV help a hangover?
Many of the worst hangover symptoms come from dehydration and an irritated stomach: thirst, a dry mouth, a headache, dizziness when you stand up, feeling weak and shaky, and nausea. Alcohol makes you pee more, and in the tropics you also sweat heavily, so it is easy to wake up several glasses of water short.
Drinking is the normal way to replace that fluid. But when you are nauseous or vomiting, water and electrolytes may not stay down long enough to be absorbed. An IV drip goes straight into the bloodstream, so it works even when your stomach won’t cooperate. Add anti-nausea medication and you can usually eat and drink again soon afterwards, which is what really gets your recovery going.
What an IV drip can’t do
Your liver breaks down alcohol at its own pace, and nothing in a drip speeds that up. A drip won’t sober up someone who is still drunk, won’t clean out your system and won’t undo the poor sleep, low blood sugar and inflammation that are also part of a hangover. That is why, even after a drip, rest, a proper meal and a quiet day help so much.
For the same reason, anyone who is still heavily intoxicated should not be treated with a hotel drip. They need to be watched by a sober person, and if there are signs of alcohol poisoning they need emergency care (see the box below).
What does the evidence say?
Honestly, not much, and we think you should know that. A 2022 systematic review in the journal Addiction looked at 21 placebo-controlled trials of hangover remedies, from supplements to medicines, and found only very low-quality evidence for any of them. None of the trials tested a modern “hangover IV drip” as sold in clinics and hotels.
The closest research comes from hospital emergency departments. In a 2013 Australian randomised trial, 144 patients with uncomplicated alcohol intoxication received either an IV saline drip plus observation or observation alone. The drip did not shorten their stay. In other words, fluids don’t make alcohol leave the body any faster.
What is well established is that IV fluids correct dehydration and that anti-nausea medicines relieve nausea. So a drip treats real symptoms; it is just not a cure for the hangover itself. Anyone who promises more than that is overselling.
Is an IV drip good for a hangover? When it’s worth it
From what our nurses see on Phi Phi, a hangover drip is most worthwhile when:
- you are vomiting or so nauseous that you can’t keep water or a rehydration drink down;
- you are clearly dehydrated: very thirsty, dizzy when you stand, peeing little and dark;
- you have a boat trip, a flight or a ferry ahead and can’t afford a day in bed;
- a mild hangover has been made worse by a day in the sun or a long night of dancing.
It is probably not worth it when you can drink normally and just feel tired and a bit headachy. In that case an electrolyte sachet from 7-Eleven, water, breakfast and a nap will get you to the same place for a fraction of the price. Our guide to the best hangover cures in Thailand has a full shopping list.
Hangover IV before drinking or after?
After. A drip is designed for the morning after, once the alcohol has mostly left your system. Having one before a night out won’t stop you getting drunk or prevent a hangover, and it may tempt you to drink more. The best “pre-drink” is a proper meal, water between drinks and a sensible pace. We also won’t give a drip to someone who is still heavily intoxicated, for safety reasons.
Who shouldn’t have a hangover IV?
An IV drip is a medical procedure, so the nurse will ask health questions first. Tell them if you are pregnant or breastfeeding, have heart, kidney or liver disease, high blood pressure, diabetes, a bleeding disorder, allergies, or take regular medication. Extra fluid can be a problem for some heart and kidney conditions, and some medicines don’t mix with anti-nausea or pain-relief drugs. Sometimes the right answer is a doctor rather than a drip. Read more about how we keep IV drips safe.
Hangover IV vs oral rehydration: is the cost worth it?
Oral rehydration salts cost very little at any 7-Eleven or pharmacy and, if you can keep them down, they work well. A hangover drip with a nurse visit on Phi Phi costs from ฿3,500. What you are paying for is speed, anti-nausea treatment when you need it, and a nurse who checks you over in your own room. If you can drink, start with the sachet. If you can’t, or you need to be on a boat by midday, the drip is the faster route. Our IV drip vs drinking water guide compares the options side by side.
When you need a doctor, not a drip
Signs of alcohol poisoning are a medical emergency: confusion, vomiting while drowsy or unconscious, slow or irregular breathing, seizures, blue or very pale skin, or someone you can’t wake up. Changed or blurred vision, severe stomach pain or breathing problems hours after drinking spirits can mean methanol poisoning from fake alcohol. Vomiting blood, chest pain or severe abdominal pain also need a doctor. Call 1669 (Thailand emergency medical services) or get to the nearest clinic immediately, and never leave the person alone.
Hangover IV FAQ
Questions about hangover drips
Does a drip cure a hangover?
No. A drip treats the dehydration and, with medication, the nausea and headache, so you feel better sooner. It doesn’t remove alcohol faster or cure the hangover; rest, food and time still do that.
How quickly does a hangover IV work?
Most people notice a difference while the drip is running or soon after it finishes, usually within an hour. How much better you feel depends on how dehydrated you were and whether anti-nausea medication was needed.
Can I have a hangover IV while still drunk?
No. For safety, we don’t treat anyone who is still heavily intoxicated. They need a sober person watching them and, if there are signs of alcohol poisoning, emergency care on 1669.
Does a hangover IV hurt?
You feel a quick sharp scratch when the cannula goes in, like a blood test. After that most people feel nothing apart from a cool sensation in the arm. A small bruise afterwards is common.
Is drinking water just as good as an IV?
If you can keep fluids down, an oral rehydration drink works well for most hangovers. An IV mainly helps when you are vomiting, very nauseous or need to recover quickly.
Keep reading
More on hangovers and hydration
Start with the cheap fixes in our hangover cures in Thailand guide, or see our hangover IV drip on Phi Phi if you need more help.
Sources: Roberts et al. (2022), Addiction: systematic review of hangover treatments · Perez et al. (2013), Emergency Medicine Australasia: IV saline in alcohol-intoxicated patients · NHS: Dehydration. Last updated October 2026.
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