Vomiting is common, but it is never something to ignore completely. It can happen with gastroenteritis, food poisoning, migraine, pregnancy, motion sickness, medication side effects and poisoning. In many mild cases, vomiting settles within about 48 hours, but ongoing vomiting can lead to dehydration, electrolyte loss, aspiration into the lungs and, rarely, tearing of the oesophagus. That is why the safest first aid response is not to force vomiting, but to focus on hydration, monitoring and getting the right help early.
If you searched for “how to make yourself throw up”, “how to make yourself puke”, or “how to make yourself vomit”, the most important answer is this: do not try to make yourself vomit unless you have been told to do so by a doctor or the Poisons Information Centre. Healthdirect says not to induce vomiting after swallowed poisoning because it can cause more harm, and CPR First Aid’s own guidance aligns with that advice.
Quick Answer: What Should You Do if Someone Is Vomiting?
If vomiting is linked to gastro or food poisoning, the priority is small sips of clear fluids or oral rehydration solution, rest, and watching closely for dehydration or severe symptoms. If poisoning is possible, rinse any substance from the mouth or face, keep the person still, identify the substance if you can, and call the Poisons Information Centre on 13 11 26 from anywhere in Australia. Call 000 if the person collapses, has seizures, has trouble breathing, or is seriously unwell.
Why Vomiting Happens
Vomiting is a reflex. Healthdirect describes it as the forceful ejection of the contents of the stomach and upper digestive system through the mouth. It is a symptom, not a diagnosis, which means the real issue is finding the cause and spotting when it may be serious.
Common causes include:
- viral gastroenteritis
- food poisoning
- swallowed toxins or other poisoning
- medication reactions
- motion sickness
- migraine
- pregnancy-related nausea and vomiting
- infections and other medical conditions
For many Australians, vomiting is most often linked to gastro or contaminated food. Healthdirect notes that vomiting caused by viral gastroenteritis often clears up without specific treatment within 2 days, and CPR First Aid’s guidance on food poisoning treatment and how to treat gastroenteritis reinforces that hydration, rest and careful monitoring are the basics of home care.
“How to Make Yourself Vomit” Is the Wrong First Aid Goal
A lot of people search for ways to throw up because they feel nauseous, think they ate something bad, or worry they swallowed something harmful. But modern first aid advice is clear: making yourself vomit is not a standard or safe treatment. Healthdirect says swallowed poisoning should not be managed by inducing vomiting, and the NSW Poisons Information Centre says the same. CPR First Aid’s own articles also warn that inducing vomiting can increase the risk of aspiration, throat injury, dehydration and worsening exposure to harmful substances.
That matters because vomiting does not reliably “remove the problem”. If the substance is corrosive, it can burn the throat a second time on the way back up. If the person inhales vomit, it can get into the lungs and cause aspiration or pneumonia. Healthdirect also notes that violent vomiting can, in rare cases, tear the oesophagus.
So if you are feeling sick, the safer question is not “how can I make myself vomit?” but “what is causing this, and what is the safest next step?” In many cases, that next step is hydration, rest, and monitoring. If poisoning is involved, it is expert advice from 13 11 26 or urgent emergency care.
First Aid for Vomiting at Home
When vomiting looks mild and is most likely related to gastroenteritis or food poisoning, home care is often appropriate. Healthdirect recommends staying home to avoid spreading infection, drinking clear fluids or oral rehydration solution in small sips, avoiding fruit juice, cordial and sugary drinks, avoiding alcohol and caffeine, and eating bland foods such as rice, pasta and crackers when you are ready.
The key is to sip, not gulp. Large amounts of fluid at once can worsen nausea and trigger more vomiting. CPR First Aid’s dehydration guidance also supports slow, steady rehydration and notes that oral rehydration solution is useful when fluid and electrolyte losses are adding up.
Useful first aid steps include:
- sit upright or lie on your side if resting
- take small sips of water or oral rehydration solution
- avoid rich, greasy or very spicy food
- return to bland food slowly when nausea settles
- wash hands well and clean vomit safely if infection is likely
If you want more detail on illness-related fluid loss, CPR First Aid’s articles on what dehydration is and signs and symptoms of severe dehydration are useful companion reads for recognising when vomiting has moved beyond “watch and wait”.
What to Do if Vomiting May Be Caused by Poisoning
Poisoning is where people most often make dangerous mistakes. Healthdirect’s first aid advice for swallowed poison is simple: do not induce vomiting, wash any substance off the mouth or face, identify the poison if possible, and get help. If there are no symptoms, call the Poisons Information Centre on 13 11 26. If the person stops breathing, collapses, has a seizure, or is severely unwell, call 000 immediately.
If you are waiting for an ambulance after someone has swallowed a substance, Healthdirect advises keeping the person still, staying with them, getting them to spit out anything remaining in the mouth, and taking a photo of the product or writing down its details. Do not wait for symptoms before seeking help.
This is exactly why CPR First Aid has published guidance on when and when not to induce vomiting in people. If the cause is poisoning, guessing is risky. Poison centres and emergency clinicians use the specific substance, amount, timing and symptoms to decide what happens next.
The Real Risk With Self-Induced Vomiting
Forced vomiting is not only a first aid issue. Repeated self-induced vomiting can become a serious health issue in its own right. Cornell Health lists major risks including electrolyte abnormalities, low potassium, abnormal heart rhythms, cardiac arrest, tooth decay, reflux, throat irritation, salivary gland enlargement, changes in digestive function, involuntary vomiting and tears in the oesophagus.
That means repeated purging is not harmless, even if someone feels “fine” afterwards. Complications can appear suddenly and without warning. Blood in vomit, chest pain, weakness, dizziness, fainting, confusion or ongoing throat and stomach pain all need prompt medical assessment.
There is also an important mental health context here. The National Eating Disorders Collaboration says bulimia nervosa is a serious, potentially life-threatening mental illness characterised by recurrent binge eating followed by compensatory behaviours such as vomiting or excessive exercise. Butterfly Foundation’s national helpline supports people in Australia experiencing eating disorders and body image concerns, and lists 1800 ED HOPE (1800 33 4673) as its contact number, available 8am to midnight AEST/AEDT, 7 days a week.
So if the urge to vomit is tied to guilt after eating, fear of weight gain, or a repeated cycle of bingeing and purging, the right next step is not another episode of vomiting. It is medical and mental health support. If there is immediate danger, call 000. If it is a crisis related to distress or self-harm, Lifeline on 13 11 14 is another urgent support option listed by Butterfly.
Signs of Dehydration You Should Take Seriously
Dehydration is one of the biggest risks when someone keeps vomiting. Healthdirect says ongoing vomiting can lead to dehydration, and warns that you should seek immediate medical attention if you have signs of dehydration, cannot keep water down, or the vomiting continues for more than 48 hours.
CPR First Aid’s dehydration resources highlight warning signs such as dark urine, little or no urination, dizziness, headache, confusion, rapid heart rate, and fainting. Severe dehydration is a medical emergency, especially when someone is too nauseated to drink or keeps vomiting everything back up.
Practical warning signs include:
- dry mouth and marked thirst
- dark urine or very little urine
- dizziness when standing
- weakness or unusual fatigue
- confusion or fainting
- inability to keep even small sips down
For children, the stakes are even higher. Healthdirect notes that children and babies are especially at risk of dehydration when vomiting, and signs of severe dehydration can include fewer wet nappies, dry mouth, sunken eyes, irritability or listlessness.
When Vomiting Is an Emergency
You should not “wait it out” when vomiting comes with red-flag symptoms. Healthdirect says you should go to an emergency department or call 000 if vomiting happens with blood or coffee-ground material, green bile, faecal material, severe or constant abdominal pain, a stiff neck and fever, a severe headache, bloody diarrhoea, or chest pain.
You also need urgent medical attention if vomiting happens alongside dehydration, high fever, inability to keep fluids down, or if it lasts more than 48 hours. If poisoning is suspected and the person is drowsy, unconscious, having seizures or actively vomiting after swallowing a substance, Healthdirect advises urgent emergency care.
A useful rule is this: if the person looks significantly worse than “just a stomach bug”, escalate early. Vomiting is a symptom that can sit anywhere from mild viral illness to a serious poisoning or acute medical emergency.
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Infection Control Matters, Too
If vomiting is related to gastroenteritis, preventing spread is part of first aid. Healthdirect recommends staying home, washing hands properly, not preparing food for others, and cleaning up vomit with gloves and protective gear before disposing of waste safely and washing hands again.
That is particularly important in households, childcare settings, aged care environments and workplaces, where one person vomiting can quickly become a broader outbreak. CPR First Aid’s related resources on food poisoning treatment and how to treat gastroenteritis expand on hydration, food safety and recovery.
Why First Aid Training Helps
Vomiting sounds simple until it is attached to choking risk, collapse, dehydration, poisoning, altered consciousness or a seriously unwell casualty. That is where practical first aid training matters. CPR First Aid’s HLTAID011 Provide First Aid course is nationally accredited and available for public and workplace bookings, while HLTAID009 Provide CPR and HLTAID014 Advanced First Aid training build broader emergency response capability.
In practice, that means knowing how to assess a casualty, protect the airway, recognise deterioration, respond to collapse, start CPR if needed, and escalate fast when vomiting is part of a bigger emergency. CPR First Aid’s broader course range is built around those real-world first aid situations, not just theory.
Frequently Asked Questions
Can you make yourself vomit safely?
No method of self-induced vomiting is considered a safe first aid option for routine illness or suspected poisoning. Healthdirect says not to induce vomiting after swallowed poisoning, and repeated self-induced vomiting can damage the throat, teeth, oesophagus and heart through electrolyte disturbances.
What if I feel like vomiting after eating something bad?
If it looks like gastroenteritis or food poisoning, focus on small sips of clear fluids or oral rehydration solution, rest, bland foods when ready, and monitoring for dehydration or severe symptoms. Many mild cases settle within a couple of days.
What if someone swallowed a chemical or too much medicine?
Do not make them vomit. Rinse any substance from the mouth or face, identify the product if you can, and call the Poisons Information Centre on 13 11 26. Call 000 if the person collapses, has breathing problems, seizures or severe symptoms.
How long is too long for vomiting?
Healthdirect says immediate medical attention is needed if vomiting continues for more than 48 hours, if you cannot keep fluids down, or if you develop dehydration or other concerning symptoms.
What are the biggest warning signs?
Blood in vomit, green bile, severe abdominal pain, severe headache, chest pain, confusion, fainting, dehydration, repeated vomiting, or vomiting after suspected poisoning all need urgent assessment.
Could repeated self-induced vomiting mean an eating disorder?
Yes. Recurrent vomiting used to compensate for eating can be part of bulimia nervosa or another eating disorder. Butterfly Foundation and the National Eating Disorders Collaboration both provide Australian information and support pathways.
Conclusion
Vomiting is common, but trying to force it is not a safe shortcut. In most situations, the right first aid response is hydration, rest, infection control if relevant, and close monitoring for dehydration or red-flag symptoms. If poisoning may be involved, do not induce vomiting. Call the Poisons Information Centre on 13 11 26 for advice, or 000 in an emergency.
For practical confidence in managing vomiting, dehydration, poisoning and deterioration until help arrives, CPR First Aid offers nationally recognised training through HLTAID011 Provide First Aid, HLTAID009 Provide CPR, and HLTAID014 Advanced First Aid training. For related reading, see CPR First Aid’s guides on food poisoning treatment, how to treat gastroenteritis, what dehydration is, signs and symptoms of severe dehydration, and when and when not to induce vomiting in people.