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Short answer: Caffeine withdrawal usually starts 12 to 24 hours after your last dose, is worst at about 20 to 51 hours, and lasts 2 to 9 days. Headache is the most common symptom, affecting about half of people in studies, along with tiredness, low mood, irritability and trouble concentrating. It can happen even if you only drink about one cup of coffee a day. The best way to avoid it is to cut back gradually, by about 25% to 50% every few days, rather than stopping all at once.
If you skip your morning coffee and wake up with a pounding headache by lunchtime, you have probably met caffeine withdrawal. It is common, it is temporary, and it is mostly avoidable. Here is what causes it, how long it lasts, and how to cut back on caffeine with as little discomfort as possible.
What you'll learn
- The symptoms of caffeine withdrawal, including the headache
- How long caffeine withdrawal lasts, day by day
- Why it happens, and who gets it worse
- How to taper caffeine and ease symptoms, and when to see a doctor
What is caffeine withdrawal?
Caffeine withdrawal is a set of symptoms that can appear when someone who uses caffeine regularly suddenly stops or cuts back. It is recognized as a condition in the DSM-5, the manual used to diagnose mental health conditions (StatPearls). A review of 57 experimental and 9 survey studies concluded that the syndrome is well characterized (Juliano & Griffiths, 2004).
Symptoms of caffeine withdrawal
The review identified 10 symptoms that met its criteria for being real effects of withdrawal (Juliano & Griffiths, 2004):
- Headache
- Fatigue
- Decreased energy or feeling less active
- Decreased alertness
- Drowsiness
- Feeling less content
- Depressed mood
- Difficulty concentrating
- Irritability
- Feeling foggy or not clear-headed
Flu-like symptoms, nausea or vomiting, and muscle pain or stiffness were also judged likely to be part of it (Juliano & Griffiths, 2004).
The caffeine withdrawal headache
Headache is the hallmark symptom. In experimental studies, about 50% of people who stopped caffeine got a headache (Juliano & Griffiths, 2004). It is typically felt on both sides of the head, throbbing, and can be severe; people who already get migraines are more likely to have severe or disabling headaches during withdrawal (StatPearls).
How long does caffeine withdrawal last?
Symptoms typically start 12 to 24 hours after your last caffeine, peak in intensity at 20 to 51 hours, and last 2 to 9 days (Juliano & Griffiths, 2004).
| Time since last caffeine | What to expect |
|---|---|
| 12 to 24 hours | Symptoms usually begin, often with a headache and tiredness |
| About 20 to 51 hours (days 1 to 2) | Symptoms are usually at their worst |
| 2 to 9 days | Symptoms fade and go away on their own |
About 13% of people in experimental studies had symptoms bad enough to cause clinically significant distress or get in the way of daily life (Juliano & Griffiths, 2004).
Why caffeine withdrawal happens
Caffeine works by blocking receptors for adenosine, a natural substance that promotes sleepiness. With regular use, the brain can add more adenosine receptors; when caffeine is suddenly gone, normal adenosine signaling has a stronger effect, which is thought to drive withdrawal symptoms (StatPearls). For how this same system can make coffee feel useless, see why coffee can make you tired.
Who gets caffeine withdrawal, and how much caffeine it takes
More caffeine generally means more frequent or more severe symptoms, but stopping doses as low as 100 mg a day produced withdrawal in studies (Juliano & Griffiths, 2004). That is about one 8-ounce cup of brewed coffee, which has about 95 mg (USDA FoodData Central). Withdrawal can occur after as little as 3 days of regular caffeine (StatPearls).
For context, average caffeine intake in the U.S. is about 280 mg a day (StatPearls). Remember that caffeine also comes from tea, soda, energy drinks, chocolate and some over-the-counter pain relievers and cold medicines (StatPearls). See how much caffeine is in a cup of coffee to work out your own number.
How to cut back on caffeine without withdrawal
Cutting back gradually is the most effective way to prevent withdrawal symptoms. StatPearls suggests reducing intake by about 25% to 50% every few days, over several days to weeks, rather than stopping abruptly (StatPearls). The FDA also recommends cutting back gradually (FDA). Here is one example for someone who has about 300 mg a day:
| Days | Daily caffeine (example) | How |
|---|---|---|
| 1 to 3 | About 200 mg | Drop one of three cups, or make one cup half-caf |
| 4 to 6 | About 150 mg | Switch another cup to half-caf |
| 7 to 9 | About 100 mg | One regular cup a day |
| 10 to 12 | About 50 mg | Half-caf, tea or a lower-caffeine drink |
| 13 onward | 0 mg, or the amount you want to settle at | Decaf or caffeine-free drinks |
This is an illustration, not a prescription. Go slower if symptoms bother you. Simple swaps help: mix regular and decaf beans, use a smaller cup, or replace one coffee with tea, matcha or a lower-caffeine mushroom coffee blend. See does decaf coffee have caffeine and matcha vs coffee.
How to ease caffeine withdrawal symptoms
Caffeine withdrawal goes away on its own, and treatment focuses on easing symptoms (StatPearls):
- Rest and drink fluids, especially in the first 1 to 3 days.
- Keep regular sleep and meal times.
- Consider an over-the-counter pain reliever for the headache. Ask a pharmacist which is right for you, and check the label: some headache medicines contain caffeine.
- A small amount of caffeine (50 to 100 mg) can quickly relieve severe symptoms, but it may keep the dependence going unless you follow it with a slower taper.
When to see a doctor
Withdrawal symptoms are temporary and are not linked to permanent changes in the brain (StatPearls). But a headache is not always from caffeine. Get medical care for a headache that comes with confusion or other changes in alertness or behavior, weakness, numbness, or other new neurological symptoms, since these need a different explanation (StatPearls). Talk to your provider before changing your caffeine intake if you are pregnant, get migraines, or take medication.
Common myths (quick reality check)
Myth: Caffeine withdrawal only happens to heavy coffee drinkers. Reality: Stopping doses as low as 100 mg a day, about one cup of coffee, produced withdrawal in studies.
Myth: Caffeine withdrawal is all in your head. Reality: A large review found that expectations are not the main driver of symptoms; the syndrome is well documented in controlled studies.
Myth: Quitting cold turkey is the fastest way. Reality: It is the fastest way to get symptoms. Tapering by about 25% to 50% every few days is the most effective way to prevent them.
Frequently asked questions (FAQ)
How long does caffeine withdrawal last?
Symptoms usually start 12 to 24 hours after your last caffeine, peak at about 20 to 51 hours, and last 2 to 9 days.
What does a caffeine withdrawal headache feel like?
It is typically on both sides of the head and throbbing, and it can be severe, sometimes like a migraine. About half of people who stop caffeine get one.
How do I get rid of a caffeine withdrawal headache?
Rest, drink fluids and consider an over-the-counter pain reliever, checking the label for added caffeine. A small dose of caffeine also helps, but it delays quitting unless you taper afterward.
What are the symptoms of caffeine withdrawal?
Headache, tiredness, low energy, drowsiness, low or irritable mood, trouble concentrating and feeling foggy. Some people also have flu-like symptoms, nausea or muscle aches.
Can one cup of coffee a day cause withdrawal?
Yes. Stopping as little as 100 mg a day, about one cup of brewed coffee, produced withdrawal symptoms in studies.
How do I quit caffeine without withdrawal?
Cut back gradually, by about 25% to 50% every few days, using half-caf, smaller cups or lower-caffeine drinks, instead of stopping all at once.
Related guides
- How long does caffeine stay in your system?
- Why does coffee make me tired?
- How much caffeine is in a cup of coffee?
- Does decaf coffee have caffeine?
- Why caffeine crashes happen
Disclaimer and when to seek help
This article is for general education and is not medical advice. These statements have not been evaluated by the Food and Drug Administration. Our products are not intended to diagnose, treat, cure, or prevent any disease. Talk to your health care provider before changing your caffeine intake if you are pregnant or breastfeeding, get migraines, have a medical condition, or take medication.
References
- Juliano LM, Griffiths RR. "A critical review of caffeine withdrawal: empirical validation of symptoms and signs, incidence, severity, and associated features." Psychopharmacology, 2004;176(1):1-29. doi:10.1007/s00213-004-2000-x
- Rocha Cabrero F, Hamilton RJ. "Caffeine Withdrawal." In: StatPearls. StatPearls Publishing; last update December 13, 2025. NCBI Bookshelf NBK430790
- U.S. Department of Agriculture. FoodData Central (SR Legacy: coffee, brewed).
- U.S. Food and Drug Administration. "Spilling the Beans: How Much Caffeine Is Too Much?" Content current as of August 28, 2024.
