Can Ibuprofen Make You Drowsy? What the Label and Sleep Research Say
You take an ibuprofen for a headache, a sore back or a fever, and an hour later your eyes are heavy and you can barely keep them open. So can ibuprofen make you drowsy, or is something else going on? The short version: ibuprofen itself is not a sedative, and drowsiness is not one of its typical side effects. But plenty of people really do feel sleepy, groggy or worn out after taking it, and there are real reasons why.
In this guide we look at what the official labeling says about ibuprofen and sleepiness, what a sleep-lab study found about ibuprofen and the night that follows, which “ibuprofen” products actually contain a sleep-inducing ingredient (hello, Advil PM), and the less obvious causes of that heavy-eyed feeling. We also cover when sleepiness after a dose is worth a call to your doctor.
Quick answer: Plain ibuprofen (Advil, Motrin IB and generic 200 mg tablets) is not expected to make most people drowsy. The ibuprofen prescribing information lists sleepiness (somnolence) only as a rare reaction, in fewer than 1% of patients, while dizziness is more common. When people feel sleepy after taking it, the cause is usually something around the drug: the pain or illness being treated, a poor night of sleep, alcohol, another medication, or a “PM” or cold-and-flu product that contains a sedating ingredient. Sleepiness that is extreme, sudden, or comes with other symptoms deserves medical attention.
What Does the Official Labeling Say About Ibuprofen and Drowsiness?
The best place to start is the labeling that comes from the drug’s regulatory approval, plus the patient information that summarizes it. Both are consistent on one point: sleepiness is not a headline side effect of ibuprofen.
| Source | What it says about drowsiness, sleepiness or dizziness |
|---|---|
| Ibuprofen prescribing information (full label) | Lists dizziness among the more common reactions (3% to 9% of patients), headache and nervousness at roughly 1% to 3%, and somnolence among reactions occurring in fewer than 1% of patients. Read the label. |
| MedlinePlus patient information | The common side-effect list includes constipation, gas or bloating, dizziness, nervousness and ringing in the ears. Drowsiness is not on that list, but “excessive tiredness” appears among symptoms that should prompt a call to the doctor when they come with others. Read MedlinePlus. |
| Advil PM (ibuprofen plus diphenhydramine) | The label states “drowsiness will occur” and warns against alcohol, driving and operating machinery. This is the sedating antihistamine, not the ibuprofen. Read the label. |
Put plainly, a small number of people taking ibuprofen will feel sleepy and it is recognized as a possible, uncommon reaction. It is not the pattern most people experience, and it is nowhere near the reliable sedation you would expect from a sleep aid or antihistamine. Dizziness is the neurological effect you are more likely to notice. If ibuprofen leaves you lightheaded or woozy, it is easy to describe that as feeling “drowsy” or “out of it,” so the two are worth separating in your own mind.
It also helps to know what ibuprofen is. It is a nonsteroidal anti-inflammatory drug (NSAID) that works mainly by reducing the body’s production of prostaglandins, chemical messengers involved in pain, inflammation and fever. It does not act on the brain’s sedative pathways the way sleeping pills, opioids or many antihistamines do. For more on its better-known risks (stomach, heart and kidney effects), see our guide to ibuprofen side effects.
Why Do Some People Feel Sleepy After Taking Ibuprofen?
If the drug is not designed to sedate you, why does the feeling happen so often that “does ibuprofen make you sleepy” is a common search? In most cases, one of the following explanations is at work.
1. Pain relief lets your body finally relax
Pain is stimulating. It raises your stress response and keeps your muscles tense. When a headache, toothache or back spasm eases, the tiredness that pain was masking can show up all at once. Many people take ibuprofen late in a rough day, and the “sleepiness” they notice is really the relief of letting go, plus the sleep debt they were already carrying.
2. The thing you took it for is making you tired
Ibuprofen is most often taken during illness: a fever, flu, infection, migraine, dental pain, or an injury. All of those drain energy by themselves. A migraine, in particular, is often followed by a heavy, wiped-out “postdrome” phase regardless of what you take. If you were tired before the pill and tired after it, the pill is rarely the cause.
3. You slept badly last night
Pain and discomfort fragment sleep. If you took ibuprofen because you hurt, you may well have lost sleep first. Our free Sleep Debt Calculator can show how quickly a few short nights add up.
4. Alcohol
Alcohol is a sedative, and it is also a poor mix with ibuprofen for other reasons: heavy drinking raises the risk of stomach bleeding with NSAIDs, a warning that appears in the MedlinePlus patient information. If you took ibuprofen for a hangover headache, the drowsiness is far more likely to be the hangover than the pill.
5. Other medications that cause sleepiness
Many commonly used medicines make people drowsy, and their effects can stack. Examples include sedating antihistamines (such as diphenhydramine and chlorpheniramine), some muscle relaxants, opioid pain medicines, gabapentin and pregabalin, benzodiazepines, and some antidepressants and sleep medicines. If you add ibuprofen on top of one of these, the ibuprofen is probably innocent, but the combination of everything in your system is why you are nodding off. Our guides to trazodone, mirtazapine and pregabalin explain how those medicines affect alertness.
6. A combination product with a sedating ingredient
This is the single biggest explanation, and it is covered in its own section below. A surprising number of products carry the word “ibuprofen” on the front while also containing something that really does cause sleepiness.
7. Dizziness, low blood sugar or dehydration
Dizziness is a recognized ibuprofen side effect. Skipping meals, not drinking enough fluid, or being unwell can also leave you light-headed and lethargic, and an NSAID taken on an empty stomach may add nausea or a queasy feeling on top. Taking the dose with food or milk, as the labels advise if your stomach is upset, often helps.
8. Less commonly, a sign of something that needs checking
Persistent, unexplained tiredness can occasionally be a clue to a problem that regular NSAID use can cause, such as slow stomach bleeding leading to anemia, or reduced kidney function. We cover the warning signs in the section on when to call a doctor.
Does Ibuprofen Affect Your Sleep? What a Sleep-Lab Study Found
Here is a twist that surprises many readers: the better-documented sleep effect of ibuprofen is not sleepiness, it is disrupted sleep. A small randomized trial published in 1994 in the journal Physiology & Behavior tested whether common over-the-counter pain relievers change normal sleep. Thirty-seven healthy adults slept in a sleep laboratory for two consecutive nights, and on the second night their sleep was recorded with polysomnography (the standard sleep-lab recording). Participants received three doses of aspirin, acetaminophen, ibuprofen or a placebo, spread from the night before through the recording night. The full details are on PubMed.
What the researchers reported:
- Aspirin and ibuprofen disrupted sleep compared with placebo. They increased the number of awakenings and the percentage of time spent awake, and they lowered sleep efficiency (the share of time in bed actually spent asleep).
- Ibuprofen also delayed the onset of the deeper stages of sleep.
- Acetaminophen (Tylenol) did not differ significantly from placebo on any recorded sleep measure.
The authors suggested the effect may relate to the way NSAIDs block prostaglandin production, which could involve lower levels of a sleep-related prostaglandin (PGD2), reduced nighttime melatonin, and changes in body temperature. Those are proposed mechanisms, not proven ones.
It is important to read this study for what it is. It was small, it was done in healthy volunteers rather than people in pain, and it is a single 1994 experiment. We do not know how well the results apply to a real person taking one tablet for a headache. Still, it supports a practical idea: if you take ibuprofen close to bedtime and then feel unrested or foggy the next day, the explanation may be lighter, more broken sleep rather than any sedation from the drug. That would produce exactly the daytime tiredness many people describe, without ibuprofen making you sleepy in the moment.
Why this matters: If you have been taking ibuprofen at night for ongoing pain and waking up exhausted, tell your doctor or pharmacist. Poorly controlled pain, broken sleep and daily NSAID use is a combination worth reviewing, and there may be better options for nighttime pain.
Advil PM and “PM” Pain Relievers: Yes, These Will Make You Drowsy
If your drowsy experience came from a product with “PM” in the name, the explanation is simple. Advil PM and similar nighttime versions combine ibuprofen 200 mg with diphenhydramine citrate 38 mg in each tablet. Diphenhydramine is a first-generation antihistamine, the same ingredient used in many over-the-counter sleep aids, and sedation is its main effect in this product. The Advil PM label is blunt about it: it says drowsiness will occur, advises avoiding alcoholic drinks, and warns against driving a motor vehicle or operating machinery. The label directs adults to take 2 caplets at bedtime and no more than 2 caplets in 24 hours. See the full Advil PM drug facts.
Two practical points follow from that:
- The sleepiness comes from the diphenhydramine, not the ibuprofen. If you only need pain relief during the day, a plain ibuprofen product avoids the sedating ingredient.
- Next-day grogginess is common with diphenhydramine. The effect can linger into the morning, particularly in older adults. The American Geriatrics Society Beers Criteria lists first-generation antihistamines such as diphenhydramine among medications that older adults should generally avoid, in part because of sedation and confusion risks. Our article on why you wake up at 3 AM every night covers safer approaches to broken sleep.
Which Ibuprofen Products Make You Drowsy and Which Don’t?
Because brand names can be confusing, it helps to check the “Active ingredients” box on the Drug Facts panel rather than the front of the box. Here is how the common categories compare.
| Product type | Likely to cause drowsiness? | Why |
|---|---|---|
| Plain ibuprofen 200 mg (Advil, Motrin IB, store brands) | Not typically | Ibuprofen alone is not a sedative; drowsiness is a rare reaction (under 1%). |
| “PM” versions (Advil PM and similar) | Yes, by design | Contain diphenhydramine citrate 38 mg, a sedating antihistamine. |
| Some multi-symptom cold and flu versions | Possibly | May include an antihistamine such as chlorpheniramine; others include decongestants that can cause restlessness instead. Always read the active-ingredient list. |
| Prescription ibuprofen with an opioid (such as hydrocodone and ibuprofen) | Yes | The opioid component commonly causes drowsiness. |
| Ibuprofen taken with alcohol, sleep aids, muscle relaxants or other sedating medicines | More likely | Sedative effects add together even though ibuprofen is not the sedating part. |
| Prescription-strength ibuprofen (400, 600, 800 mg) | No clear pattern | The labeling does not list dose-specific drowsiness, but higher doses carry higher risks of other side effects. |
Can 400, 600 or 800 mg of Ibuprofen Make You More Drowsy?
A frequent search is whether a higher dose, such as 600 mg or 800 mg, changes the sleepiness picture. The prescribing information does not describe a dose-related sleepiness effect. What the evidence does support is that higher doses and longer use raise the risk of the serious side effects, such as stomach ulcers and bleeding, kidney problems, and heart attack or stroke, which is why the labeling stresses using the lowest effective dose for the shortest time. For adults, the over-the-counter label generally allows 200 mg to 400 mg every 4 to 6 hours, with a maximum of 1,200 mg in 24 hours unless a doctor directs otherwise. Prescription strengths are meant to be taken exactly as prescribed.
If you take 800 mg and feel heavy-headed or sleepy, think through the same list as above: dizziness, an empty stomach, another medication, the illness itself, or alcohol. And if you feel unusually sleepy after taking more than you meant to, treat that differently, as explained below.
Ibuprofen vs. Acetaminophen vs. Aspirin for Sleepiness
In the 1994 sleep-lab study, acetaminophen was the one painkiller that did not significantly change recorded sleep, while ibuprofen and aspirin did. That does not make acetaminophen “better” overall. It has its own risks, especially to the liver when too much is taken, and the right choice depends on your stomach, kidneys, heart, liver, age and the other medicines you use. Our guide to ibuprofen side effects walks through that comparison, and our naproxen guide covers another common NSAID. Neither ibuprofen nor acetaminophen is a sedative on its own, so if one of them leaves you sleepy, look for the contributing factors first.
Is It Safe to Drive or Work After Taking Ibuprofen?
Plain ibuprofen does not carry the “do not drive” warning that sedating products do. But you should use common sense. If you feel dizzy, lightheaded, foggy or sleepy after a dose, do not drive or operate machinery until it passes. If you are using any product that contains diphenhydramine or another sedating ingredient, follow its warning and stay off the road. If you are not sure whether something you take could add to drowsiness, a pharmacist can check your whole list in a couple of minutes.
How Long Does Drowsiness After Ibuprofen Last?
Ibuprofen is cleared from the body fairly quickly. Its half-life is roughly two hours in most healthy adults, and a standard dose is designed to work for about four to six hours. So if sleepiness is related to the drug, it should ease within hours, not days. If you feel run down for several days, the likelier explanations are the underlying illness, poor sleep, another medication, or a health issue that needs evaluation. A sedating ingredient such as diphenhydramine can leave you groggy well into the next morning.
Why Does Ibuprofen Make Kids Sleepy?
Parents often notice that a child dozes off after children’s ibuprofen. In most cases, that is the fever or illness the medicine was given for, along with the fact that a child whose fever has come down finally feels comfortable enough to sleep. Rest is normal and often helpful when a child is sick.
Always use a product and dose designed for the child’s weight or age, measure liquid medicine with the dosing device provided, and ask a pediatrician before giving ibuprofen to an infant under 6 months or when you are unsure. Contact a doctor right away or seek emergency care if your child is very hard to wake, limp, confused, breathing unusually, or has been given more than the recommended amount.
When Sleepiness After Ibuprofen Is Not Normal
Seek urgent help if: you or someone else is extremely sleepy, difficult to wake, confused, breathing slowly, or has vomiting or stomach pain after taking more ibuprofen than directed, or after mixing it with other sedating drugs or alcohol. In the United States, Poison Help (1-800-222-1222) offers free, confidential guidance around the clock, and 911 is for emergencies.
Extreme drowsiness can be a sign of an overdose or of a dangerous mix with other substances, which is a different matter from ordinary sleepiness. Taking extra tablets because pain is not easing, especially when several different products each contain ibuprofen or another NSAID, is an easy mistake to make. Count every product you take across 24 hours.
When to Call Your Doctor About Tiredness and Ibuprofen
Occasional sleepiness after a dose is rarely a medical problem. But some patterns should be checked. The MedlinePlus patient information lists serious side effects that call for contacting your doctor right away, and several of them, including “excessive tiredness,” pale skin, a fast heartbeat, shortness of breath, swelling of the feet, ankles or abdomen, dark or bloody urine, and yellowing of the skin or eyes, can be linked to bleeding, kidney or liver effects. Book a prompt appointment if you notice:
- New, persistent or worsening fatigue after starting regular ibuprofen use, particularly with pale skin, dizziness on standing or a racing heart.
- Black, tarry or bloody stools, or vomiting blood or material that looks like coffee grounds, which can signal stomach bleeding (a boxed-warning risk for NSAIDs). This is an emergency.
- Swelling in the legs, feet or abdomen, unexplained weight gain, or a marked drop in urine output.
- Chest pain, shortness of breath, weakness on one side of the body or slurred speech. Call 911.
- Sleepiness together with confusion, severe headache, stiff neck or fever.
It is also worth raising the question with your doctor if you take ibuprofen more than a few days a week, if you have heart disease, high blood pressure, kidney disease, or a history of ulcers, or if you take blood thinners, aspirin or other NSAIDs. Pain that needs ibuprofen for more than 10 days, according to the over-the-counter label, should be evaluated rather than self-treated indefinitely.
How to Avoid Feeling Drowsy or Groggy When You Take Ibuprofen
- Check the active ingredients. Make sure the product contains only ibuprofen. If it says “PM,” “nighttime,” or “multi-symptom,” read the label for an antihistamine.
- Avoid alcohol on the day you take ibuprofen, both for drowsiness and for stomach safety.
- Take it with food or milk if your stomach is sensitive, and drink a full glass of water, which can ease nausea and light-headedness.
- Use the smallest effective dose and follow the label’s time limits. Taking more does not make it work better and raises risk.
- Be thoughtful about bedtime doses. Because the sleep-lab evidence suggests ibuprofen can fragment sleep in some people, try tracking how you feel after daytime versus evening doses and discuss any pattern with your clinician.
- Review everything you take. Ask a pharmacist whether anything on your list adds to drowsiness, including supplements and herbal products.
- Protect your sleep in general. A steady schedule, a cool dark room and limiting evening caffeine and alcohol help. Our guides on magnesium for sleep and melatonin dosage cover two common supplements, and you can explore the full Sleep & Nerve Health section.
- Treat the pain at its source. If back, joint or dental pain keeps sending you to the medicine cabinet, a clinician can look for causes and options that do not depend on daily NSAIDs.
Frequently Asked Questions About Ibuprofen and Drowsiness
Does ibuprofen make you sleepy or awake?
Neither, as a rule. Ibuprofen is not a stimulant or a sedative. Sleepiness is a rare reaction, and the more notable sleep finding is that it can disrupt sleep for some people. Whatever you notice is often due to pain, illness, or another ingredient or medicine.
Can ibuprofen make you tired the next day?
It can, indirectly. In a small 1994 sleep-lab study, ibuprofen increased awakenings, reduced sleep efficiency and delayed deeper sleep, which could leave you less rested. Also, the pain or illness you took it for may be what is draining you.
Can ibuprofen 800 mg make you drowsy?
The labeling does not describe dose-related drowsiness, but 800 mg is a prescription-strength dose with higher risks of other side effects, including dizziness. If you feel sleepy on it, check for alcohol, other medicines or a sedating combination product, and tell your prescriber if it keeps happening.
Does Advil PM make you groggy the next day?
It can. Advil PM contains diphenhydramine, which can cause morning drowsiness, especially if you do not get a full night of sleep, take it more often than directed, or are older. The label says drowsiness will occur and not to drive or operate machinery.
Can you take ibuprofen and then go to sleep?
Most people can. Take it with food or milk if your stomach is sensitive and with a full glass of water. If you notice that nights after taking it are more restless, or you have heartburn, mention it to your clinician.
Can I take ibuprofen with sleep aids or other sedating medicines?
Ibuprofen is sold together with diphenhydramine in Advil PM, but adding other sedating products stacks their effects and their warnings. Ask a pharmacist to review your specific combination, especially with alcohol, opioids, benzodiazepines, muscle relaxants, gabapentin or pregabalin.
Is ibuprofen or acetaminophen better if I am worried about sleep?
In one sleep-lab study, acetaminophen did not significantly change sleep while ibuprofen did, but each drug has different safety concerns for the stomach, kidneys, heart and liver. The better choice depends on your health and other medicines, so ask your doctor or pharmacist.
How long after taking ibuprofen will I feel drowsy?
If it is going to happen from the drug, it would be within the first hours as it takes effect, and it should fade as the dose wears off, typically within several hours. Sleepiness that is severe, long-lasting or comes with other symptoms needs medical advice.
The Bottom Line
So, can ibuprofen make you drowsy? Occasionally, yes, but it is uncommon: the prescribing information lists somnolence as a rare reaction, and dizziness is the more common nervous-system effect. Most “ibuprofen drowsiness” turns out to be something else: a nighttime formula with diphenhydramine, a second medicine or alcohol, the illness or pain itself, or sleep that was disrupted. If you want to avoid it, stick to a plain ibuprofen product, read the active ingredients, take the lowest effective dose, and talk with a pharmacist or doctor if you feel unusually tired, if you rely on ibuprofen regularly, or if sleepiness comes with any of the warning signs above.
For the stomach, heart and kidney risks that matter most with ibuprofen, read our guide to ibuprofen side effects, and compare it with naproxen side effects.
If you are waking in the night, see why you wake up at 3 AM every night and use the free Sleep Debt Calculator to see how much sleep you owe.
For sleep supplements, see our melatonin dosage guide, magnesium for sleep, and our Yu Sleep review.
Browse everything in the Sleep & Nerve Health section.
Sources
- Ibuprofen tablets: prescribing information (Drugs.com label listing), adverse reactions table.
- Ibuprofen: MedlinePlus Drug Information, American Society of Health-System Pharmacists (ASHP), last revised 09/15/2023.
- Advil PM: package insert and drug facts, ibuprofen 200 mg and diphenhydramine citrate 38 mg.
- Murphy PJ, Badia P, Myers BL, Boecker MR, Wright KP Jr. Nonsteroidal anti-inflammatory drugs affect normal sleep patterns in humans. Physiol Behav. 1994;55(6):1063-6.
This article is for informational purposes only and is not medical advice. It is not a substitute for a diagnosis or treatment plan from a qualified healthcare provider. Always follow the directions on your medicine’s label and consult a doctor or pharmacist about your own situation. If you think you or someone else has taken too much medicine, call Poison Help at 1-800-222-1222 or seek emergency care.