The Risks of Long-Term NSAID Use

NSAIDs (nonsteroidal anti-inflammatory drugs), such as ibuprofen, naproxen and diclofenac, are among the most used medicines in the world. For most people they are safe in short courses. Taken most days for months or years, though, they become a leading cause of medicine-related harm, especially in older adults and people with other health conditions.¹ The same action that dulls pain also switches off protection the body relies on in several organs at once. So the risk depends less on any single pill and more on how long you take them, how much, which drug, and who you are.

Why A Painkiller Can Affect So Many Organs

NSAIDs work by blocking two enzymes, COX-1 and COX-2, which make prostaglandins.² Prostaglandins drive pain and swelling, which is why blocking them helps an aching knee or back.³ But the same chemicals protect the stomach lining, keep the gut moving and help the kidneys work.⁴

Duration matters because a single tablet blocks prostaglandins for a few hours, and then the body recovers. Doses taken every day keep that protection switched off almost all the time. Damage such as ulcers builds slowly, often without symptoms at first, so most serious harm is tied to regular, higher-dose use.

Many medicines count as NSAIDs: ibuprofen, naproxen, diclofenac, indomethacin and celecoxib. Many cold, flu and combination pain products also contain ibuprofen or naproxen, so check labels. Acetaminophen (paracetamol) is not an NSAID and works differently.

Stomach And Gut Damage

Regular NSAID use can cause indigestion, stomach ulcers and injury to the small intestine.⁵ These injuries can bleed or tear through the gut wall, which is a medical emergency.⁶ The stomach risk with ibuprofen rises with the dose and is higher in some groups of people.⁷

Ulcers can bleed with little warning pain, especially in older adults. Black, tarry or bloody stools can mean bleeding higher in the gut. Vomiting blood, or material that looks like coffee grounds, needs emergency care. Sudden severe belly pain may signal a perforated ulcer.

Taking fewer NSAIDs, or adding an acid-reducing pill, lowers rates of indigestion, ulcers and complications.⁸ Acid-reducing pills such as omeprazole strongly cut stomach acid for long periods and help ulcers heal.⁹ That is why doctors often prescribe one alongside a long-term NSAID.¹⁰ If you take an NSAID daily, ask whether one makes sense for you.

A few habits feel protective but aren’t. Taking an NSAID with food eases upset but does not prevent ulcers. Antacids for symptoms are not the same as a daily acid-reducing pill. Coated tablets that dissolve past the stomach still block stomach-protecting prostaglandins, because the effect travels through the blood.

Heart Attack And Stroke Risk

Blocking COX-2 reduces a substance in blood vessel walls that widens vessels and prevents clots.¹¹ The balance can then tip toward narrowed vessels and clot formation, especially with COX-2-focused drugs.¹² With older nonselective NSAIDs, a strong effect generally needs continuous high doses.¹³

Among people without heart disease, users of indomethacin had about 36% more heart attacks, strokes and coronary deaths than non-users.¹⁴ Celecoxib at usual doses showed no added risk in the same comparison.¹⁵ For most NSAIDs the heart risk looks like a class effect, with naproxen a possible exception.¹⁶ People at high heart risk are advised to avoid NSAIDs where possible.

A 36% increase applies to a small starting risk, so most healthy users never have an event. For someone who already had a heart attack, the same increase matters much more.

Chest pain or pressure, especially spreading to the arm or jaw, needs emergency help. So do sudden face drooping, arm weakness or slurred speech, and sudden shortness of breath while on a regular NSAID.

Kidneys, Blood Pressure And Swelling

In the kidneys, prostaglandins widen the small arteries that feed them and keep blood flowing.¹⁷ Blocking them can narrow those vessels and lead to acute kidney injury.¹⁸ Older age makes kidney harm from NSAIDs more likely.¹⁹ Some drugs differ: celecoxib had fewer kidney problems than ibuprofen in a large arthritis trial.²⁰

Some people are more vulnerable to kidney harm: those dehydrated from illness, heat or heavy exercise, people taking water pills or certain blood pressure medicines, and people with existing kidney disease or heart failure. Kidney trouble is often silent, and a blood test may show it before symptoms do. Passing less urine, swelling or unusual tiredness can be signs. A lab report may list eGFR, an estimate of how well your kidneys filter.

NSAIDs can also raise blood pressure by making the kidneys keep sodium and water.²¹ They reduce vessel-widening prostaglandins and boost vessel-narrowing chemicals as well.²² Swollen ankles and rising readings are both possible on regular use.²³ If you take blood pressure medicine, check your readings after starting a daily NSAID.

Are Some NSAIDs Or Forms Safer

COX-2 inhibitors, or coxibs, such as celecoxib, are easier on the stomach than older NSAIDs.²⁴ In a large arthritis trial, heart events were similar: about 2.3% on celecoxib, 2.5% on naproxen and 2.7% on ibuprofen.²⁵ Celecoxib caused significantly fewer stomach problems than either.²⁶ Diclofenac caused fewer major stomach events than naproxen or ibuprofen, with similar heart risk.²⁷

Rubbed-on NSAIDs relieved injuries about as well as pills.²⁸ They caused fewer stomach side effects but more skin reactions.²⁹ In people with rheumatoid arthritis, topical users had about a third fewer heart events than pill users.³⁰ For a single painful knee or sore muscle, a gel is worth trying first.

Applying gel correctly matters: use it on the painful joint only, as the label directs, wash your hands afterward and avoid broken skin. Don’t combine a gel with daily NSAID pills without advice.

Choosing with your doctor depends on your history. A past ulcer or bleeding points toward a coxib plus an acid-reducing pill. Heart disease often means avoiding NSAIDs or using the lowest dose briefly. In every case, aim for the lowest effective dose for the shortest time.

Ibuprofen And Daily Aspirin

Ibuprofen taken before aspirin, or several times a day, blocked aspirin’s effect on platelets.³¹ Naproxen and indomethacin also blocked aspirin’s antiplatelet effect.³² Modelling suggests ibuprofen within 1 hour after aspirin weakens it, but not when taken more than 2 hours after.³³ If you take daily aspirin, take it first and wait before any ibuprofen, and ask your doctor about regular use.

Low-dose aspirin protects the heart by keeping platelets less sticky. If an NSAID gets there first, aspirin can’t do that job, and the person may think they are protected when they aren’t.

Liver, Brain, Breathing And Bone Effects

NSAID liver injury is uncommon and usually damages the liver cells themselves.³⁴ In some people, the drugs’ breakdown products bind to proteins and trigger an immune or toxic reaction.³⁵ Only a small number of susceptible people develop it.³⁶ Yellowing skin or eyes, dark urine or itching may signal liver trouble.

NSAIDs can rarely cause a non-infectious meningitis, most often seen with ibuprofen in people with lupus.³⁷ Indomethacin can rarely cause sudden confusion, paranoia or hallucinations in older adults.³⁸ Memory and attention problems are reported in some older adults on NSAIDs.³⁹ New forgetfulness after starting an NSAID is worth reporting, as are dizziness and falls. Headache, stiff neck and fever while on an NSAID need prompt checking.

Some people with asthma and nasal polyps have attacks triggered by NSAIDs.⁴⁰ Wheezing within hours of a dose can be a sign of NSAID sensitivity and should be reported. NSAIDs slow bone healing in animal studies, and whether this applies to people is still debated.⁴¹ If you are healing a fracture, ask before taking NSAIDs regularly.

Rebound Headaches From Frequent Use

Using painkillers too often for headaches can itself trigger more headaches, often called rebound headaches.⁴² NSAIDs are among the main drug types involved, alongside acetaminophen, caffeine combinations and triptans.⁴³

The pattern is headaches on most days despite, or because of, regular pills. Taking headache pills more than a couple of days a week is a warning sign. Stopping usually brings a worse spell before improvement, so plan it with a doctor. Switching to another painkiller can keep the cycle going.

Who Should Be Most Careful

Older adults and people with other illnesses have the most medicine-related harm from NSAIDs.⁴⁴ People at high heart or stomach risk should avoid them.⁴⁵ Risks stack up: age plus a blood thinner plus a daily NSAID multiplies bleeding risk, and heart failure plus water pills plus an NSAID strains the kidneys. Tell every doctor and pharmacist about over-the-counter NSAID use.

NSAIDs after 20 weeks of pregnancy are linked to early closure of a key blood vessel in the baby’s heart and low amniotic fluid.⁴⁶ They reduce prostaglandins the baby needs and can affect the baby’s kidneys.⁴⁷ In pregnancy, ask before taking any NSAID, and use acetaminophen if advised. Long-term users benefit from regular blood pressure readings, periodic kidney blood tests and a yearly review of whether the NSAID is still needed.

Ways To Need Fewer NSAIDs

Heat or cold, physical therapy, exercise and weight loss can reduce or remove the need for NSAIDs, especially for arthritis.⁴⁸ Yoga, tai chi, massage, acupuncture and cognitive behavioural therapy are also recommended pain approaches.⁴⁹

Acetaminophen is an option for mild to moderate osteoarthritis pain, though it may relieve pain less than NSAIDs for some people.⁵⁰ Capsaicin cream helps localised arthritis pain.⁵¹ Some antidepressants and nerve-pain medicines, plus lidocaine patches, treat long-term pain.⁵²

To cut back, use non-drug methods daily and save NSAIDs for flare days. Tracking pain and doses for two weeks shows what really helps. Acetaminophen has its own liver limits, so follow the label maximum. Discuss changes with your doctor rather than swapping alone.