The short answer
A normal hangover eases within about a day. Cleveland Clinic says symptoms “tend to ease up over eight to 24 hours.” So still feeling genuinely sick three days later is beyond a typical hangover. The usual reasons it drags on are a still-irritated stomach, lingering dehydration and poor sleep, and alcohol-driven anxiety. Rehydrating, eating gentle food, and resting should get you there.
But two situations need more than time. If you drink regularly and feel shaky, sweaty, anxious, or sick when you cut down or stop, that can be alcohol withdrawal, which needs medical advice. And severe belly pain, persistent vomiting, blood in your vomit or black stools, yellowing skin, or confusion are emergencies. Details below.
Why it can drag on past a day
Alcohol does a few things to your body that take longer than one night to undo, especially after a heavy session.
- An irritated stomach. Cleveland Clinic notes that “alcohol irritates the lining of your stomach and intestines… these issues lead to an upset stomach and nausea.” That irritation (a form of gastritis) can keep you feeling queasy for a couple of days.
- Dehydration. “Alcohol makes you pee more. You lose a lot of fluid this way,” and catching back up takes time and steady rehydration.
- Sleep debt. Alcohol wrecks sleep quality, so even a full night afterward can leave you unrefreshed and rough for days.
- Anxiety and low mood. The “hangxiety” that follows drinking can outlast the physical symptoms and make you feel unwell in a more general way.
What actually helps
There is no cure that beats time. Cleveland Clinic is blunt: “Time is the only true cure for a hangover. It takes time for your body to clear the toxic byproducts, rehydrate and heal tissue.” While you wait it out:
- Rehydrate steadily, with water and something containing electrolytes.
- Eat bland, gentle food. Plain carbohydrates are easiest on an upset stomach.
- Rest and sleep, which is when the recovery actually happens.
- Antacids can settle the stomach. Be cautious with anti-inflammatory painkillers (ibuprofen, aspirin) if your stomach is already irritated, as they can make it worse, and be careful mixing paracetamol/acetaminophen with alcohol because of the strain on your liver.
- Do not drink more. Cleveland Clinic: “drinking more alcohol (‘hair of the dog’) won’t help.”
The important question: is it withdrawal?
This is the part a page about a lingering hangover must not skip, because for some people the answer changes everything.
Alcohol withdrawal is, per Cleveland Clinic, “a range of symptoms that can happen if you stop or significantly reduce alcohol intake after long-term use.” Its timing is exactly what makes it easy to mistake for a bad hangover: symptoms start within hours and “peak 24 to 72 hours after your last drink.” The symptoms overlap too, nausea, sweating, tremor, anxiety, insomnia, so “still sick three days after drinking” can, in a regular drinker, actually be withdrawal rather than a hangover.
This matters because withdrawal can become dangerous. Its severe form includes “hallucinations, seizures, confusion” and delirium tremens, which “can be life-threatening.” Cleveland Clinic’s instruction is clear: “go to the nearest emergency room or call 911… if you or a loved one has any concerning symptoms of alcohol withdrawal.” If you drink often and this sick feeling comes on when you cut back, talk to a doctor, because withdrawal can be managed safely with the right support.
When to get help
| What is happening | What to do |
|---|---|
| Confusion, hallucinations, seizures, or severe shaking after stopping or cutting down drinking | Emergency. Call 911 / 999. Signs of severe alcohol withdrawal |
| Vomiting blood, or vomit that looks like coffee grounds; black or tarry stools | Emergency. Call 911 / 999. Possible stomach bleeding |
| Severe or constant abdominal pain, or vomiting you cannot stop and cannot keep fluids down | Get urgent care. Could be pancreatitis or dehydration needing treatment |
| Yellowing of the skin or eyes, dark urine | See a doctor promptly. Possible liver strain |
| You drink regularly and feel shaky, sweaty, or sick whenever you cut down | Talk to a doctor. This pattern suggests withdrawal and can be managed safely |
| Ordinary lingering hangover, easing with fluids, food, and rest | Keep resting and rehydrating. It should pass |
Common questions
How long should a hangover actually last?
Most ease within eight to 24 hours. A rough session can leave you below par into a second day, but genuinely feeling sick three days later is longer than a hangover usually runs, which is why it is worth looking at the other explanations here.
Why do I still feel sick three days later?
Most often a combination of a still-irritated stomach, dehydration you have not fully recovered from, poor sleep, and lingering anxiety. It should improve day by day with rest and fluids. If it is not improving, or you are a regular drinker whose symptoms started on cutting back, see a doctor.
Is throwing up after drinking a good thing?
Not something to force. Occasional vomiting can happen as your body reacts to alcohol, but making yourself sick does not speed recovery and risks dehydration and irritating your throat and stomach further. Vomiting that will not stop, or that contains blood, is a reason to seek urgent care.
When is it an emergency?
Confusion, seizures, or hallucinations; blood in vomit or black stools; severe abdominal pain; yellowing skin; or vomiting you cannot control are all reasons to call 911 or 999 or go to the emergency room. Do not wait these out as “just a bad hangover.”
The short version
A hangover usually eases within a day, so feeling sick three days on is beyond the norm, most often from an irritated stomach, dehydration, poor sleep, and anxiety that just need more time, fluids, gentle food, and rest. Time is the only real cure, and more alcohol does not help. The two things to take seriously are alcohol withdrawal, if you drink regularly and feel sick on cutting down, which can be dangerous and needs medical advice, and red flags like confusion, seizures, blood in vomit or stools, severe belly pain, or yellowing skin, which are emergencies.
Sources
- Cleveland Clinic. Hangover.
- Cleveland Clinic. Alcohol Withdrawal.
This article is for general information and does not replace advice from a qualified clinician. Symptoms of alcohol withdrawal, signs of stomach bleeding, severe pain, or jaundice need urgent medical attention. If you are worried about your drinking, your doctor can help without judgement.
