After an IV drip: how you’ll feel, bruising and what not to do
What to do after an IV drip is simple: keep the plaster on for a few hours, keep drinking water, eat something, and take it easy for the rest of the day. A small bruise where the cannula went in is normal. Spreading redness, a hot or hard vein, a fever or any sign of an allergic reaction is not, and needs a call to us or a doctor.
The short version
IV drip aftercare in five points
- Leave the plaster on for a few hours and keep the spot clean and dry.
- Expect a little bruising: it’s the most common side effect and fades within a few days.
- Keep drinking water and eat: a drip tops you up but doesn’t stop you sweating in the heat.
- Go gently: no heavy lifting with that arm, no big night out straight away, and wait before swimming.
- Message us or see a doctor if redness spreads, the vein gets hot and hard, or you get a fever. Swelling of the face or trouble breathing means call 1669.
How do you feel after an IV drip?
Most guests feel more comfortable by the time the bag is empty, and over the next hour or so. If you were dehydrated, the headache, dizziness and dry mouth usually ease first. If the nurse gave you medicine for nausea, your stomach should feel more settled.
A few other things are normal and nothing to worry about:
- Needing to pee: you’ve just had a bag of fluid, and your body passes what it doesn’t need.
- Feeling sleepy or relaxed: lying still for 30–60 minutes after a rough night does that. Some anti-nausea medicines can also make you drowsy, and your nurse will tell you if they used one.
- A cool or slightly achy arm for a little while, where the fluid went in.
Be honest with yourself about what a drip can do. It rehydrates you and can ease symptoms, but it doesn’t undo the cause. After a hangover you still need sleep and food, and after a stomach bug you still need to eat gently for a day or two. Our page on the hangover IV drip explains what to expect from that drip in particular.
Caring for the spot where the cannula went in
When the drip finishes, your nurse removes the cannula, presses on the spot for a minute or two to stop any bleeding and puts on a plaster. Then:
- Keep the plaster on for a few hours, or as long as your nurse advises.
- Keep the spot clean and dry, and don’t pick or scratch it.
- Avoid heavy lifting or carrying heavy bags with that arm for the rest of the day.
- If it bleeds a little after you take the plaster off, press firmly on it with a clean tissue for a few minutes.
Is bruising after an IV drip normal?
Yes. A small bruise or a tender spot where the cannula went in is the most common side effect of any drip, just as it is after a blood test. The NHS notes that bruising or swelling where a needle has been usually goes away after a few days. A bruise may change colour as it fades, from purple to yellow-green, and that’s normal too.
Bruises are more likely if your veins were hard to find because you were dehydrated, if you take medicine that thins your blood, or if you bruise easily anyway. Pressing on the spot after the cannula comes out, and not lifting heavy things with that arm, helps keep a bruise small.
What not to do after an IV drip
- Don’t stop drinking water. The drip helps, but in Phi Phi’s heat you keep losing fluid. Sip water through the rest of the day.
- Don’t skip food. Eat something light once your stomach feels ready.
- Don’t head straight back to the bar. A drip doesn’t protect you from the next hangover. If you do go out, eat first, pace yourself and drink water between drinks.
- Don’t rush into the sea. Wait until the needle spot has closed over and the plaster has done its job, usually a few hours, and keep the spot clean. Ask your nurse if you’re unsure.
- Don’t dive without checking. If you plan to dive on the same day, ask your dive centre and our nurse first. For most divers a drip on a rest day is the simpler choice.
- Don’t sit in the midday sun if you still feel light-headed. Rest in the shade or your room first.
When to contact us or see a doctor
Problems after a drip are uncommon, and we use sterile, single-use equipment to keep the risk low. Rarely, the vein can become inflamed (phlebitis) or the spot can get infected. The NHS describes phlebitis as pain, tenderness or swelling with warm, red or darkened skin, and sometimes a vein that feels hard. Message us, or see a doctor, if you notice:
- Redness, warmth or swelling that is spreading, or getting worse instead of better
- A vein that feels hard, sore or looks like a red line up the arm
- Pus or fluid coming from the needle spot
- A fever, chills or feeling generally unwell
- Numbness or tingling in your hand or fingers
- Bleeding that won’t stop with firm pressure
Signs of an allergic reaction: call 1669
Allergic reactions to a drip are very rare, which is why we ask about allergies first and your nurse stays with you throughout. A severe reaction (anaphylaxis) is an emergency. Call 1669 (Thailand emergency medical services) straight away for swelling of the lips, tongue, mouth or throat, difficulty breathing or wheezing, tightness in the throat, feeling faint or confused, or skin that turns pale, blue or blotchy. Ask your hotel reception to help guide the ambulance to you.
You can read more about the possible side effects and how we keep drips safe on our IV drip safety page.
Getting back to your holiday
Most guests are back out exploring the same afternoon or the next morning. The best plan for the rest of the day is a meal, plenty of water, some shade and an early night. If you still feel unwell the next day, or you’re getting worse rather than better, don’t just book another drip: message us and the nurse will tell you honestly whether you should see a doctor.
Curious about how the visit itself works, from the first message to the nurse leaving? See how a hotel IV drip visit works.
Aftercare FAQ
After your IV drip: your questions
How long does it take to feel better after an IV drip?
Many people feel a difference by the end of the drip or within the next hour, especially if they were dehydrated. Tiredness from a hangover or a stomach bug can take longer to lift, so plan a quiet day.
How long should I keep the plaster on?
A few hours is usually enough, or as long as your nurse advises. Keep the spot clean and dry until it has closed over.
Can I drink alcohol after an IV drip?
It’s best to wait and give your body a chance to recover. If you do drink, eat first, go slowly and have water between drinks. A drip doesn’t prevent the next hangover.
Can I swim after an IV drip?
Wait a few hours until the needle spot has closed and keep it clean. If you plan to dive, ask your dive centre and our nurse first.
Is it normal for my arm to hurt after a drip?
A little tenderness and a small bruise are normal and fade in a few days. If the pain, redness or swelling gets worse or spreads, or you get a fever, message us or see a doctor.
Keep reading
Before and after your drip
See how we keep IV drips safe, or read about our hangover IV drip on Phi Phi.
Sources: NHS: Phlebitis · NHS: Blood tests · NHS: Anaphylaxis. Last updated October 2026.
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