Dozens of prescription and over-the-counter medications can raise the risk of a heart attack, and the list includes drugs most people would never suspect. Common painkillers, cold medicines, migraine treatments, cancer therapies, and even some psychiatric medications have all been linked to heart attacks through different pathways. The three main ways drugs trigger cardiac events are by damaging the lining of blood vessels, causing coronary arteries to spasm shut, or promoting blood clots that block flow to the heart muscle.1PubMed Central. Drug-Induced Myocardial Infarction: A Review of Pharmacological Triggers and Pathophysiological Mechanisms Understanding which medicines carry this risk, and why, can help you have a better conversation with your doctor about what you’re taking.
Over-the-Counter Pain Relievers
Nonsteroidal anti-inflammatory drugs, the class that includes ibuprofen, naproxen, diclofenac, and celecoxib, are probably the most widely used medicines linked to heart attack risk. Millions of people take them routinely for headaches, arthritis, and muscle pain without thinking twice. Yet the cardiovascular risk varies a great deal depending on which NSAID you reach for and how much you take.
Among otherwise healthy people, diclofenac stands out as one of the riskier options. A large study found that diclofenac was associated with roughly double the odds of cardiovascular death compared to not taking an NSAID, and the risk climbed with higher doses.2PubMed. Cause-specific cardiovascular risk associated with nonsteroidal antiinflammatory drugs among healthy individuals Ibuprofen showed a trend toward increased stroke risk in the same analysis, though the effect was smaller. Naproxen, by contrast, was not associated with increased cardiovascular death, which is why it is often considered the safest NSAID for the heart.
For people who already have heart disease, the stakes are higher. In patients recently hospitalized for serious coronary problems, diclofenac and ibuprofen both carried more cardiovascular risk than naproxen did.3PubMed. Cardiovascular risks of nonsteroidal antiinflammatory drugs in patients after hospitalization for serious coronary heart disease Celecoxib, a prescription NSAID sometimes marketed as gentler on the stomach, also shows a dose-dependent pattern. An analysis pooling six trials found that the heart risk was relatively low at 400 mg once a day but roughly tripled at 400 mg twice a day.4Circulation. Cardiovascular risk of celecoxib in 6 randomized placebo-controlled trials: the cross trial safety analysis The practical takeaway is that dose and duration matter enormously. Taking an NSAID for a day or two when you tweak your back is a very different proposition from taking one daily for months.
Cold Medicines and Decongestants
Pseudoephedrine, the active ingredient in many over-the-counter cold and sinus products, works by tightening blood vessels in the nasal passages to reduce congestion.5PubMed. Acute Myocardial Infarction from Coronary Vasospasm Precipitated by Pseudoephedrine and Metoprolol Use The problem is that it does not limit its vessel-tightening effect to the nose. It acts on receptors throughout the body, including in the coronary arteries. In rare cases, this can trigger coronary vasospasm, where an artery suddenly clamps down and starves a patch of heart muscle of blood. Reports of heart attacks linked to pseudoephedrine tend to involve people who took higher-than-recommended doses, combined it with other stimulants, or had underlying heart conditions they did not know about. Phenylephrine, which has largely replaced pseudoephedrine on open shelves in some countries, works through a similar mechanism but is generally considered less potent as a systemic vasoconstrictor.
Migraine Medications
Triptans are the go-to prescription treatment for moderate to severe migraines. They relieve headache pain by activating serotonin receptors that constrict dilated blood vessels in the brain. But those same receptors exist in the coronary arteries, and triptans can narrow them too.6PubMed. QT prolongation, Torsade de Pointes, myocardial ischemia from coronary vasospasm, and headache medications. Part 1: review of serotonergic cardiac adverse events with a triptan case In most healthy people, this narrowing is trivial. In someone with atherosclerosis or other vascular disease, it can be enough to choke off blood flow and cause a heart attack.
Triptans are contraindicated in people with known coronary artery disease, uncontrolled high blood pressure, or a history of stroke for this reason. Still, case reports exist of coronary vasospasm and even fatal cardiac arrest in young patients with minimal cardiovascular risk factors who took a triptan.7Journal of Cardiology Cases. Fatal coronary vasospasm following oral triptan intake These events are rare, but they are a reminder that the risk is not zero even in low-risk people. If you use triptans regularly and notice chest tightness or pressure after taking one, that warrants an immediate conversation with your doctor.
Stimulant Medications for ADHD
Amphetamine-based drugs and methylphenidate, the two main classes of stimulant used for attention-deficit/hyperactivity disorder, raise heart rate and blood pressure. That much is well established and expected. What is less settled is whether they meaningfully increase heart attack risk. The most commonly observed cardiovascular changes are modest bumps in heart rate and blood pressure, and rare events like heart attacks and serious arrhythmias have been reported but remain poorly understood in terms of how often they happen and who is most vulnerable.8PubMed Central. Adult ADHD Medications and Their Cardiovascular Implications
For children and young adults without pre-existing heart conditions, the absolute risk appears to be very small. The concern ramps up for adults, especially those with undiagnosed structural heart problems, high blood pressure, or other cardiovascular risk factors. Before starting a stimulant, most guidelines recommend at least a basic cardiac history and blood pressure check. If you have a family history of sudden cardiac death or already take medications that affect heart rhythm, make sure your prescriber knows.
Antipsychotic Medications
Antipsychotic drugs, used for conditions like schizophrenia, bipolar disorder, and sometimes severe anxiety or agitation, carry a surprisingly large cardiovascular signal. A nationwide study found that antipsychotic use was associated with roughly two and a half times the odds of an acute heart attack, with newer (second-generation) antipsychotics carrying a somewhat higher risk than older ones.9Circulation. Association between antipsychotic use and risk of acute myocardial infarction: a nationwide case-crossover study The risk increased with dose and was most pronounced during the first 30 days of use.
Researchers in that study also looked at which receptor interactions correlated most strongly with heart attack risk. Blocking a specific dopamine receptor appeared to be the common thread among the drugs with the highest risk. This is still an active area of research, and the clinical challenge is real: many patients on antipsychotics have limited alternatives, and the diseases being treated carry their own mortality risks. But the findings do argue for using the lowest effective dose and for cardiovascular monitoring, especially soon after starting or increasing an antipsychotic.
Chemotherapy and Targeted Cancer Drugs
Cancer treatment is one of the areas where drug-induced heart attacks are most recognized and most feared. The chemotherapy agent 5-fluorouracil (5-FU) is a well-known offender. It can damage the lining of coronary arteries, promote clot formation, and cause coronary vasospasm, sometimes all at once.10PubMed Central. Coronary Artery Vasospasm Induced by 5-fluorouracil: Proposed Mechanisms, Existing Management Options and Future Directions Coronary vasospasm is a recognized and documented side effect of 5-FU, and it can occur even in patients with no prior heart disease.11PubMed Central. The Incidence, Risk Factors, and Outcomes With 5-Fluorouracil-Associated Coronary Vasospasm Patients receiving 5-FU are typically monitored closely for chest pain, and treatment is stopped if vasospasm occurs.
Beyond traditional chemotherapy, newer targeted therapies that block blood vessel growth in tumors also affect the heart. Drugs that inhibit vascular endothelial growth factor (VEGF inhibitors), used in kidney cancer, colorectal cancer, and several other malignancies, can cause high blood pressure, accelerate atherosclerosis, and promote blood clots.12PubMed Central. Cardiovascular Toxicity Induced by Vascular Endothelial Growth Factor Inhibitors A meta-analysis found that VEGF inhibitors were associated with about a 50% increase in the risk of arterial blood clots, including heart attacks and strokes.13PubMed. Cardiovascular toxicity of angiogenesis inhibitors in treatment of malignancy: A systematic review and meta-analysis
Immune checkpoint inhibitors, the newer immunotherapy drugs that have revolutionized treatment of melanoma, lung cancer, and other tumors, add another layer of cardiac risk. While the most talked-about cardiac side effect is myocarditis (inflammation of the heart muscle), these drugs can also cause pericarditis, blood vessel inflammation, and accelerated atherosclerosis, all of which can contribute to heart attacks.14PubMed. Update on Immunotherapy Cardiotoxicity: Checkpoint Inhibitors, CAR T, and Beyond Cardio-oncology, the subspecialty that manages heart problems in cancer patients, has grown rapidly in response to these risks.
Testosterone Replacement Therapy
For years, testosterone replacement in men with low levels was dogged by concerns about heart attacks and strokes. Earlier observational studies sent mixed signals, and the FDA added a warning to testosterone labels in 2015. A large randomized trial published in 2023 specifically tested whether testosterone replacement was safe for the heart. The results were reassuring on the headline question: heart attacks, strokes, and cardiovascular death occurred at nearly identical rates in the testosterone group and the placebo group.15New England Journal of Medicine. Cardiovascular Safety of Testosterone-Replacement Therapy The trial did find higher rates of atrial fibrillation, kidney injury, and pulmonary embolism in the testosterone group, so the drug is not without cardiovascular effects. But the specific fear of heart attacks appears to have been overstated based on the strongest available evidence.
Diabetes Medications
Rosiglitazone, a diabetes drug sold under the brand name Avandia, became one of the most high-profile examples of a medicine pulled back over heart attack concerns. A meta-analysis published in the New England Journal of Medicine found a significant increase in the risk of heart attacks and a borderline increase in cardiovascular death among people taking the drug.16PubMed Central. Study indicates diabetes drug linked to cardiovascular death The findings led to severe prescribing restrictions in the United States and an outright market withdrawal in Europe. While some of those restrictions were later relaxed after additional data, rosiglitazone’s saga reshaped how regulators evaluate new diabetes drugs. Since then, the FDA has required cardiovascular outcome trials for all new diabetes medications before they reach the market, which is why newer drug classes like GLP-1 receptor agonists and SGLT2 inhibitors have been tested so thoroughly for heart safety.
Erectile Dysfunction Drugs Mixed With Nitrates
Sildenafil (Viagra) and related drugs do not directly cause heart attacks by themselves. But they become dangerous when combined with nitrate medications, which are commonly prescribed for chest pain (angina). Both drug classes relax blood vessels and lower blood pressure. Together, the effect can be dramatic and unpredictable. Research has shown that sildenafil combined with a nitrate caused large, prolonged drops in blood pressure and reduced blood flow through coronary arteries that already had significant blockages.17PubMed. Effects of sildenafil citrate (Viagra) combined with nitrate on the heart A sudden crash in coronary blood flow can trigger a heart attack, especially in someone whose arteries are already narrowed. This is why every erectile dysfunction drug label carries a clear warning against use with any form of nitrate, including nitroglycerin tablets, isosorbide, and even recreational nitrate “poppers.”
Supplements and Recreational Drugs
Not everything that causes heart attacks comes from a pharmacy. Dietary supplements containing ephedra alkaloids, once hugely popular for weight loss and energy, were associated with a significant number of cardiovascular adverse events before the FDA banned them in 2004. An analysis of reported adverse events found that nearly half of the cases judged to be related to ephedra involved cardiovascular problems, including high blood pressure, rapid heartbeat, and stroke.18PubMed. Adverse Cardiovascular and Central Nervous System Events Associated with Dietary Supplements Containing Ephedra Alkaloids Some current supplements marketed for “energy” or “fat burning” contain stimulant compounds that act similarly but have not been studied as carefully. If a supplement makes your heart race, that is not a sign it is working. It is a sign of cardiovascular stress.
Cocaine is probably the most well-known recreational drug that causes heart attacks. It triggers coronary artery spasm and promotes platelet clumping, both of which can lead to a sudden blockage of blood flow. Heart attacks from cocaine use are especially common in younger adults between 18 and 45, an age group that would otherwise rarely have one.19PubMed Central. Cocaine-induced acute myocardial infarction Methamphetamine acts through a related mechanism, causing prolonged overstimulation of the sympathetic nervous system. Both drugs can cause heart attacks even in people with entirely clean coronary arteries.
When Stopping a Medicine Causes the Problem
Sometimes the danger is not a drug you are taking but one you suddenly stop. Beta-blockers, widely prescribed for high blood pressure, heart failure, and after heart attacks, are the classic example. If you have been on a beta-blocker for a while and abruptly discontinue it, your body can rebound with a surge of adrenaline-like activity, spiking your heart rate and blood pressure. In people with underlying coronary disease, this rebound can trigger an acute worsening of heart symptoms, including heart attack.20PubMed. The abrupt discontinuation of antihypertensive treatment Clonidine, another blood pressure medication, can produce a similar withdrawal spike. The lesson is straightforward: never stop a heart or blood pressure medication cold turkey without talking to your prescriber. These drugs are typically tapered over days to weeks.
Why Some People Are More Vulnerable
A drug that barely moves the needle for one person can be genuinely dangerous for another. Several factors push someone into higher-risk territory:
- Existing plaque: If your coronary arteries are already narrowed by atherosclerosis, it takes less of a push from a drug to cause a complete blockage. This is why NSAIDs, triptans, and stimulants carry much stronger warnings for people with known heart disease.
- Multiple medications: Combining drugs that each raise blood pressure or promote clotting by a small amount can produce a meaningful combined effect. A stimulant plus a decongestant plus high-dose ibuprofen is a more concerning cocktail than any one of them alone.
- Dose and duration: Nearly every drug on this list shows a dose-dependent risk. The celecoxib data illustrate this clearly: a lower dose barely registered above placebo, while the highest tested dose tripled cardiovascular risk.4Circulation. Cardiovascular risk of celecoxib in 6 randomized placebo-controlled trials: the cross trial safety analysis
- Age and comorbidities: Older adults and people with diabetes, chronic kidney disease, or high blood pressure metabolize drugs differently and have less cardiovascular reserve to absorb side effects.
Individual variation in how your body processes a drug also plays a role. Genetic differences in drug-metabolizing enzymes can leave some people with much higher blood levels of a drug at the same dose, amplifying side effects including cardiovascular ones. This is an area where pharmacogenomic testing may eventually help personalize prescribing, but for now it is rarely used outside of a few specific drug-gene pairs.
How Many Drugs Carry Formal Heart Warnings
The scale of the issue is larger than most people realize. An analysis of FDA black box warnings, the agency’s most serious safety label, found that cardiac or cardiovascular adverse events were the single most common category, appearing on 165 different drugs.21PubMed Central. US Food and Drug Administration black box warnings: Characteristics of drug classes and adverse effects That count surpassed every other adverse-effect category, including immune reactions, liver damage, and infections. Many of these warnings were added after the drug was already on the market, discovered through post-approval surveillance rather than in original clinical trials.
This is not cause for panic about every prescription you fill, but it does argue for a specific habit: whenever you start a new medication, especially if you have any cardiovascular risk factors, ask your pharmacist or doctor whether it carries cardiac warnings and whether any of your other medications interact with it. The combination question is at least as important as the single-drug question, and it is the one most often overlooked.