Why does a stomach bug or flu leave you so drained?
Feeling drained after a stomach bug or flu comes mostly from losing water and salts. The most common reasons people ask us about a drip after illness are:
- A stomach bug with vomiting or diarrhoea.
- Food poisoning while travelling, often after a change of food and water.
- A flu-like illness with fever, sweating and little appetite.
- Hot weather, long walks in the sun, and too little to drink.
In all of these, the body loses water and salts faster than you put them back. You may feel weak, dizzy when you stand up, thirsty, with a dry mouth and darker urine. Sleep and food often suffer too, so recovery feels slow.
For most healthy adults, this kind of mild dehydration gets better by drinking. A drip is not the first step. It is an option for some people, in some situations, after a doctor has looked at the whole picture.
What should you drink after vomiting or diarrhoea?
After vomiting or diarrhoea, drink oral rehydration salts in small, frequent sips. This simple step works well for most people. A few practical points:
- Use oral rehydration salts from a pharmacy, mixed exactly as the packet says. They contain the right balance of salt and sugar to help your gut take in water.
- Take small sips often, for example a few sips every few minutes, instead of a full glass at once. A full glass on an upset stomach often comes back up.
- Water, clear soup and diluted juice can help too. Avoid alcohol, and go easy on very sugary or fizzy drinks.
- When you feel ready, start light food: rice, bread, bananas, yoghurt, soup.
- Rest, and stay out of the heat.
If you are travelling, ask the hotel reception where the nearest pharmacy (eczane) is. Many are open late, and there is always a pharmacy on night duty in each area.
When does an IV drip make sense after illness?
A drip may make sense after illness when you have struggled to keep fluids down, have signs of dehydration, are otherwise stable, and our doctor agrees. All of these need to be true:
- You have struggled to keep fluids down for some hours, or you keep losing more than you can drink.
- You have signs of mild to moderate dehydration: thirst, dry mouth, dizziness when standing, less urine than usual, tiredness. But you are still passing some urine.
- You are an adult and otherwise stable: you are alert and clear, you can walk, and you have none of the warning signs listed below.
- Our doctor agrees after reading your answers and asking follow-up questions.
The doctor may also say no. If your symptoms sound more serious, or if you are likely to get better by drinking, we will tell you that honestly. Sometimes the right answer is a hospital or a family doctor, not a drip.
What do IV fluids do, and what don’t they do?
IV fluids put water and some salts straight into a vein, and that is their main job. When you cannot drink enough, a drip may help you feel more comfortable faster and make it easier to start drinking again.
Here is what a drip does not do:
- It does not cure the infection. A stomach bug or flu runs its course; your body clears it.
- It does not “boost” your immune system.
- Added vitamins have limited evidence for helping recovery from a short illness. We say this plainly.
- It does not replace a doctor’s visit when something more serious may be going on.
Our drips used after illness are mainly saline with some vitamins and minerals, such as Myers’ Classic. The Hangover Rescue drip also contains an anti-nausea medicine. Anti-nausea medicine is given only if the doctor prescribes it for you, after checking your history and other medicines. Prices are on the treatments page.
Who should not have IV fluids at home?
Some people should not have IV fluids at home, even when they feel very dry: for example in pregnancy without their own doctor’s OK, with kidney or heart failure, or young children. Our doctor will decline or postpone the drip for:
- Pregnancy, unless your own doctor approves it.
- Kidney failure or heart failure. Too much fluid too fast can be dangerous.
- Some medicines, such as some blood thinners, diuretics (water tablets), or heart or kidney medicines.
- A known allergy to any ingredient.
- Infants and young children. They become dehydrated quickly and need a children’s doctor or hospital.
- Acute symptoms such as chest pain, shortness of breath or fainting.
More details are on our safety page.
When should you go to hospital instead of having a home drip?
Severe dehydration, blood in vomit or stool, severe belly pain or trouble breathing need a hospital the same day, not a home drip. Go to an emergency department, or call 112, if you have any of these signs:
- Severe dehydration: very little or no urine for many hours, confusion, fainting, or a very fast heartbeat.
- Blood in vomit or stool, or black, tar-like stool.
- Severe belly pain, or pain that keeps getting worse.
- High fever with a stiff neck, or with a rash.
- Difficulty breathing or chest pain.
- Vomiting that does not stop, or you cannot keep anything down at all for many hours.
- A baby or young child who is sick and drinking poorly.
- Older people with heart or kidney disease, people who are pregnant, and people with diabetes who have high sugars or keep vomiting.
- Symptoms that last more than about 2 days, or are getting worse instead of better.
A drip at home cannot do the tests and monitoring these situations need. Please do not wait for a nurse if you have any of these signs.
Can an elderly parent have IV fluids at home after a stomach bug or flu?
An elderly parent can sometimes have IV fluids at home, but only after the doctor has checked their medicines and health. Older people get dehydrated more easily and may not feel thirsty. They also often take medicines for the heart, kidneys or blood pressure, which change how much fluid is safe.
For this reason, the doctor asks more questions for older people: which medicines they take, whether they have heart or kidney disease, how much they have drunk and passed urine, and whether they are clear in their thinking. If there is any doubt, the doctor will advise a hospital or the person’s own doctor first.
If you book, have the list of medicines ready and stay with your relative during the visit.
What does the nurse check before a home drip after illness?
Before a drip after illness, the nurse checks your blood pressure, pulse, temperature and how alert you are, and asks again about your symptoms. The nurse comes only after the doctor approves, to your home or hotel, for example in Kadıköy, Üsküdar or Beşiktaş. In detail, the nurse:
- Checks your blood pressure, pulse, temperature and how alert you are.
- Asks again about vomiting, diarrhoea, urine and any new symptoms.
- Looks for any red flag. If one appears, the drip is stopped or not started, and you are advised to go to hospital.
The nurse places a small cannula in a vein in your arm or hand and stays until the drip is finished, usually 40–60 minutes. Keep sipping fluids afterwards, and rest. If you feel worse later, seek medical care.
Questions first? Message us on WhatsApp. A doctor reads every booking before a nurse is sent.
