Can Naproxen Make You High? Explaining the Side Effects

Naproxen does not produce a high. It belongs to a class of pain relievers called nonsteroidal anti-inflammatory drugs (NSAIDs), which work by reducing inflammation rather than by acting on the brain’s reward pathways. That said, naproxen can cause side effects that alter how you feel, including drowsiness, dizziness, and mental fogginess, and those sensations sometimes get confused with intoxication or a psychoactive effect. Understanding why those side effects happen, who is most vulnerable to them, and what actually occurs in overdose helps clear up the confusion.

Why Naproxen Does Not Produce Euphoria

Drugs that make people feel high typically flood the brain with dopamine or interact with opioid receptors, cannabinoid receptors, or similar systems tied to pleasure and reward. Naproxen does neither. It works by blocking enzymes called COX-1 and COX-2, which produce prostaglandins involved in pain and inflammation. That action takes place mostly in peripheral tissues like joints, muscles, and the lining of the stomach. In the brain itself, naproxen barely registers. A clinical trial measuring drug levels in cerebrospinal fluid found that naproxen concentrations in the fluid surrounding the brain were roughly 100 times lower than in the bloodstream.¹ That extremely limited penetration into the central nervous system is a big reason why naproxen does not alter mood, perception, or consciousness in any way that resembles a high.

Compare that with an opioid like hydrocodone, which crosses the blood-brain barrier efficiently and binds to mu-opioid receptors to produce both pain relief and euphoria. Or compare it with alcohol, which rapidly enters the brain and depresses neural activity broadly. Naproxen simply does not work that way. The pain relief it provides is real, but it arrives through reduced inflammation at the site of injury, not through any alteration of brain chemistry that you would experience as pleasurable or mind-altering.

Side Effects That Get Mistaken for a High

Even though naproxen is not psychoactive in the recreational sense, it can cause a handful of central nervous system side effects that make some people feel “off.” Reviews of NSAID toxicity have documented that drowsiness, dizziness, headache, and blurred vision are among the most common symptoms when NSAIDs are taken in higher-than-recommended doses or in overdose situations.² If you have never experienced those side effects before and they come on after taking naproxen, you might describe the feeling as lightheadedness, spaciness, or even mild intoxication. But the mechanism is entirely different from what happens with drugs that actually produce a high. These effects are more like a nuisance than a buzz, and they are not accompanied by euphoria, relaxation, or any of the reward sensations that characterize recreational drug use.

At standard over-the-counter doses, these neurological side effects are uncommon. A pooled analysis of eight randomized controlled studies comparing naproxen to placebo, ibuprofen, and acetaminophen found that naproxen’s overall safety profile closely resembled that of placebo. The most frequently reported adverse events across all treatment groups were gastrointestinal, with dyspepsia (a fancy word for an upset stomach) being the most common complaint with naproxen specifically. There was no dose effect, and no difference between older and younger participants in overall adverse event rates.³ In other words, when you take naproxen at the dose printed on the box for a few days, your most likely side effect is a mildly unhappy stomach, not anything that feels remotely like a high.

Naproxen’s Abuse Potential Is Essentially Zero

Regulatory agencies do not classify naproxen as a controlled substance anywhere in the world. It sits on pharmacy shelves next to ibuprofen and acetaminophen, available without a prescription, because decades of evidence show it carries no meaningful abuse liability. One study that tracked patients with chronic pain over 12 months found that the rate of abuse or dependence behavior among those taking NSAIDs was about 2.5%, which was statistically equivalent to the rate for tramadol (a weak opioid) at 2.7%, and both were significantly lower than the 4.9% rate for hydrocodone, a full opioid.⁴ When the researchers looked at persistent abuse behavior (more than one episode over the year), NSAID rates dropped to just 0.5%.

That 2.5% figure for a single hit on an abuse-screening tool over an entire year is about as low as it gets in any medication category. For context, the screening algorithm used in that study flagged behaviors like dose escalation, running out early, or requesting refills ahead of schedule. With NSAIDs, those behaviors almost always reflected poorly managed pain rather than recreational use. Nobody is crushing up naproxen tablets to chase a feeling, because there is no feeling to chase.

Cognitive Effects in Older Adults

There is one population where naproxen’s brain effects deserve more attention: older adults. A case series identified eight patients over 65 who developed cognitive dysfunction or personality changes after starting naproxen or ibuprofen. In every case, symptoms cleared within two weeks of stopping the drug.⁵ The changes included confusion, memory problems, and shifts in personality that family members noticed. These are not subtle drowsiness; they are genuine cognitive disruptions that can be alarming when they occur.

A broader literature review of central nervous system side effects from NSAIDs as a class identified three categories of concern: aseptic meningitis (rare, mostly seen in lupus patients taking ibuprofen), psychotic episodes (also rare, mostly linked to indomethacin in elderly patients and presenting as disorientation, paranoia, or hallucinations), and cognitive dysfunction including memory and attention deficits in older patients on NSAIDs.⁶ These effects are not a “high” by any stretch. They are adverse reactions that can mimic or worsen age-related cognitive decline, and the key concern is that doctors and family members may attribute them to aging rather than to the medication. The encouraging finding is that they are reversible once the NSAID is discontinued.

If you are caring for an older relative who recently started taking naproxen and seems more confused, forgetful, or behaviorally different than before, the medication is worth discussing with their doctor. This is one of those side effects that often goes unrecognized because it looks like something else entirely.

What Happens in an Overdose

Taking far more naproxen than directed does not produce a high either, but it does get dangerous. Most people who overdose on NSAIDs remain asymptomatic or develop mild, self-limiting gastrointestinal symptoms like nausea and stomach pain. However, serious complications have been documented, including seizures, metabolic acidosis, coma, and acute kidney failure.⁷

A published case report describes a 28-year-old man who ingested 70 grams of naproxen (roughly 140 times the standard single dose) along with alcohol in a suicide attempt. When he arrived at the emergency department 90 minutes later, he was drowsy but his vital signs were mostly normal aside from a rapid heart rate.⁸ Even at that extreme dose, the presentation was sedation and cardiovascular stress rather than anything resembling euphoria. The drowsiness in overdose comes from the body being overwhelmed by a toxic load, not from any pleasant neurochemical cascade. It is the kind of drowsiness that precedes organ damage, not the kind anyone would seek out voluntarily.

The reason this matters is that some people, particularly teenagers or young adults who have heard that “pills can get you high,” might try taking large quantities of whatever is in the medicine cabinet. Naproxen will not deliver what they are looking for, but it can land them in the emergency room with kidney problems or worse. If someone you know has taken a large amount of naproxen, treat it as a medical emergency regardless of how they seem on the outside, since the serious complications can develop with a delay.

Dizziness, Vertigo, and Balance

One side effect of naproxen that catches people off guard is vertigo, the sensation that the room is spinning. Anti-inflammatory medicines including NSAIDs are listed among drugs known to cause vertigo, and some are also considered potentially ototoxic, meaning they can affect the inner ear structures responsible for balance and hearing.⁹ Vertigo from naproxen is not common, but when it happens it can be disorienting enough that someone who has never experienced drug-induced vertigo before might wonder if they are having some kind of altered-consciousness experience.

The practical takeaway is straightforward: if you start feeling like the room is tilting or spinning after taking naproxen, do not drive or operate machinery. The sensation usually resolves after the drug clears your system. If it persists or is severe, stop taking the medication and see a doctor, because vertigo from any cause deserves evaluation when it does not go away on its own. This is especially relevant for people who take naproxen regularly for conditions like arthritis, where cumulative doses over weeks or months might increase the likelihood of inner-ear-related effects.

Naproxen in Combination Products and Polydrug Situations

Naproxen shows up in some combination over-the-counter products, often paired with a sleep aid like diphenhydramine (an antihistamine). Those products are marketed for nighttime pain relief, and the drowsiness they cause comes from the antihistamine component, not from naproxen itself. If someone takes one of these combination pills and feels sedated or groggy, the culprit is the antihistamine doing exactly what it is designed to do. Misattributing that sedation to naproxen can lead to confusion about what the drug actually does on its own.

In more concerning scenarios, naproxen has appeared in polydrug overdose cases where individuals ingest multiple medications at once. A systematic review of over-the-counter drug misuse documented a case where naproxen was part of a cocktail that included bupropion, citalopram, acetaminophen, and other drugs.¹⁰ In these situations, the dangerous and mind-altering effects come from the other substances, not from naproxen. But naproxen’s presence in the mix complicates medical treatment because it adds its own toxicity profile, particularly the risk to the kidneys and stomach, on top of whatever the other drugs are doing.

The broader pattern worth understanding is that over-the-counter availability does not mean a drug is harmless in combination. Naproxen interacts meaningfully with blood thinners, certain antidepressants, blood pressure medications, and alcohol. Mixing naproxen with alcohol is one of the most common ways people unintentionally amplify its side effects: both irritate the stomach lining, both stress the kidneys, and the drowsiness from alcohol can combine with any mild sedation from naproxen to make you feel significantly more impaired than either substance alone would produce.

Why People Search This Question

The fact that “can naproxen make you high” is a common search query reveals something about the broader landscape of pain medication in many countries. Years of opioid-related public health crises have made people acutely aware that some painkillers are addictive and mind-altering. When a doctor prescribes naproxen or someone picks it up at the pharmacy, the natural question is whether it falls into that category. The answer is an unambiguous no, backed by pharmacology, clinical trials, and decades of population-level safety data.

A separate group searching this question may be people who have experienced one of naproxen’s less common side effects (dizziness, cognitive fog, vertigo) and want to understand what happened. Those effects are real, they are documented in the medical literature, and they deserve attention. But they are side effects in the truest sense: unwanted, unpleasant, and a reason to reconsider the medication rather than to take more of it. If naproxen is making you feel strange, the correct response is to talk to your doctor about alternatives, not to assume you have discovered a new recreational substance. The pharmacy shelf has plenty of effective pain relievers, and your doctor can help you find one whose side-effect profile suits you better.