Can Adderall or Other ADHD Medication Cause a Heart Attack or Stroke?
By Ryan S. Sultan, MD
Psychiatrist · Columbia University Irving Medical Center
Published · 6-minute read
Most large studies of prescribed ADHD medication have found no excess of heart attacks or strokes among adults taking it. In a US cohort of 443,198 adults aged 25 to 64, current use was associated with a rate ratio of 0.83 for heart attack, sudden cardiac death or stroke compared with non-use, and 1.03 compared with past use.1
A 2022 meta-analysis of 19 studies and 3,931,532 participants of all ages reached a similar result: a relative risk of 1.06 for heart attack (95% CI, 0.68 to 1.65) and 0.91 for cerebrovascular disease (0.72 to 1.15).2 Both intervals include no difference. The heart attack interval is also wide enough that a moderate increase can't be excluded.
These are observational studies of medication taken as prescribed. They describe associations and cannot establish causal relationships. The studies report ADHD medications as a group or by drug class, and none cited here reports results by brand.
The largest adult study counted 1,357 heart attacks and 575 strokes
Habel and colleagues followed adults for 806,182 person-years, a median of 1.3 years per person, and recorded 1,357 heart attacks, 296 sudden cardiac deaths and 575 strokes. During current use of ADHD medication, the crude incidence per 1,000 person-years was 1.34 for heart attack and 0.56 for stroke.1
- Current use versus non-use: adjusted rate ratio 0.83 (95% CI, 0.72 to 0.96).
- Current use versus remote (past) use: adjusted rate ratio 1.03 (95% CI, 0.86 to 1.24). For new use versus remote use it was 1.02 (0.82 to 1.28).
The authors attributed the lower rate in the first comparison to healthy user bias: people who fill ADHD prescriptions may be healthier than people who never do in ways the records don't capture. They compared current users with past users to account for that bias, and that comparison showed no significant difference.1
Rate ratios were similar for ischemic and hemorrhagic stroke. Amphetamine accounted for 44% of current use and methylphenidate for 45%, and results were similar for specific medications. Median current use was 0.33 years, about four months, so the study describes risk during treatment and says little about many years of exposure.1
Can Ritalin or Concerta cause a heart attack?
A second US study matched 43,999 adults newly prescribed methylphenidate to 175,955 nonusers. Adjusted hazard ratios for stroke, for heart attack, and for the two combined did not differ statistically from 1.3
The same study found a higher rate of sudden death or ventricular arrhythmia among methylphenidate users (adjusted hazard ratio 1.84; 95% CI, 1.33 to 2.55) and of death from any cause (1.74; 1.60 to 1.89). The authors wrote that the lack of a dose-response relationship does not support a causal relationship.3
Stroke risk was higher at higher doses in one Danish cohort
A Danish study of adults reported absolute risks over 10 years. It compared people taking at least one defined daily dose per day a year after starting ADHD medication with prior users who had stopped.4
| Outcome | At least 1 defined daily dose per day | Prior users | Risk ratio |
|---|---|---|---|
| Stroke | 2.1% (1.8% to 2.4%) | 1.7% (1.5% to 1.9%) | 1.2 (1.0 to 1.5) |
| Heart failure | 1.2% (0.9% to 1.4%) | 0.7% (0.6% to 0.8%) | 1.7 (1.3 to 2.2) |
| Acute coronary syndrome | 1.0% (0.8% to 1.2%) | 0.9% (0.8% to 1.0%) | No apparent association |
| Composite of the three | 3.9% (3.4% to 4.3%) | 3.0% (2.8% to 3.2%) | 1.3 (1.1 to 1.5) |
Source: Holt and colleagues, 2024. Figures in parentheses are 95% confidence intervals.4
Acute coronary syndrome, the category that includes heart attack, showed no apparent association. The stroke difference was 0.4 percentage points over 10 years, with a risk ratio interval that begins at 1.0. The authors wrote that possible associations between long-term risk and increasing dosage "should warrant further investigation."4
A Swedish study of long-term use, which I've covered in a separate breakdown, observed no statistically significant increase in ischemic heart disease or cerebrovascular disease.5
The Strattera (atomoxetine) label states that stroke and myocardial infarction have been reported in adults treated at the recommended ADHD dosage and that the drug's role in those cases is unknown.6
ADHD medication after a heart attack: one small Swedish study
A 2026 research letter from Sweden followed 564 adults with ADHD after a first heart attack. Of these, 207 (36.7%) received ADHD medication during follow-up and 357 (63.3%) did not start it after discharge.7
The hazard ratio for a recurrent cardiovascular event with medication was 0.85 at 6 months (95% CI, 0.55 to 1.32), 1.04 at 12 months (0.64 to 1.68) and 1.19 at 24 months (0.62 to 2.29). Every interval crosses 1, and the widest runs from a 38% lower rate to more than double. The authors raised the possibility that medication use was more likely among clinically stable patients. They also noted that the ischemic heart disease component reflected rehospitalization with that diagnosis, which is short of a confirmed second heart attack, and that larger studies are needed.7
With intervals this wide, the study shows neither safety nor harm. Whether to restart ADHD medication after a heart attack is decided with the cardiologist and the prescriber.
Among 987,762 people prescribed stimulants, 49,902 had an adverse cardiovascular event, and atherosclerotic heart disease was the strongest marker of who did.8 I cover medication choice for people with heart conditions in ADHD medication with high blood pressure or a heart condition. Serious events in children and adolescents are covered in heart safety of ADHD medication in children.
Limitations of the evidence
This evidence has limitations. First, every study here is observational, and people who fill ADHD prescriptions differ from people who don't in ways that adjustment may not capture. Second, exposure was short in the largest cohort, a median of 0.33 years of current use, and that cohort stopped at age 64. Nevertheless, the pooled estimates for heart attack and stroke sit close to 1, and no study cited here found more heart attacks among people taking ADHD medication as prescribed.
Chest pain, fainting or shortness of breath on ADHD medication is a reason to call 911 or go to an emergency department. The unresolved signal is stroke and heart failure at higher doses in one cohort. Blood pressure and pulse are what a prescriber can measure throughout treatment.
Frequently asked questions
Can Adderall cause a heart attack?
Studies of prescribed ADHD medication have not found more heart attacks in current users. In 443,198 adults aged 25 to 64, the adjusted rate ratio for heart attack, sudden cardiac death or stroke was 1.03 compared with past use, and a 2022 meta-analysis found a relative risk of 1.06 for heart attack (95% CI, 0.68 to 1.65). These are observational studies, and the interval can't exclude a moderate increase.1, 2
Can Adderall or Vyvanse cause a stroke?
A 2022 meta-analysis found a relative risk of 0.91 for cerebrovascular disease with ADHD medication (95% CI, 0.72 to 1.15). One Danish cohort found a 10-year stroke risk of 2.1% in adults on higher doses and 1.7% in prior users, with a risk ratio of 1.2 (1.0 to 1.5). None of the studies cited reports results by brand.2, 4
Can Ritalin cause a heart attack?
In a US study of 43,999 adults newly prescribed methylphenidate and 175,955 nonusers, adjusted hazard ratios for heart attack and stroke did not differ statistically from 1. The same study found a higher rate of sudden death or ventricular arrhythmia (hazard ratio 1.84), without a dose-response relationship.3
Can I take ADHD medication after a heart attack?
The one study cited here followed 564 Swedish adults with ADHD after a first heart attack. Hazard ratios for a recurrent cardiovascular event were 0.85 at 6 months, 1.04 at 12 months and 1.19 at 24 months, and every confidence interval crossed 1. With intervals this wide, the study shows neither safety nor harm, so the decision is made with the cardiologist and the prescriber.7
How common are heart attacks in adults taking ADHD medication?
In adults aged 25 to 64, the crude incidence during current use was 1.34 heart attacks and 0.56 strokes per 1,000 person-years. Compared with past use, the adjusted rate ratio for serious cardiovascular events was 1.03 (95% CI, 0.86 to 1.24).1
Chest pain, fainting, or shortness of breath during treatment needs immediate medical assessment. Call 911 or go to the nearest emergency department for severe symptoms. Medication changes are made with the prescriber.
Sources
- Habel LA, Cooper WO, Sox CM, et al. ADHD medications and risk of serious cardiovascular events in young and middle-aged adults. JAMA. 2011;306(24):2673-2683.
- Zhang L, Yao H, Li L, et al. Risk of Cardiovascular Diseases Associated With Medications Used in Attention-Deficit/Hyperactivity Disorder: A Systematic Review and Meta-analysis. JAMA Netw Open. 2022;5(11):e2243597.
- Schelleman H, Bilker WB, Kimmel SE, et al. Methylphenidate and risk of serious cardiovascular events in adults. Am J Psychiatry. 2012;169(2):178-185.
- Holt A, Strange JE, Rasmussen PV, et al. Long-Term Cardiovascular Risk Associated With Treatment of Attention-Deficit/Hyperactivity Disorder in Adults. J Am Coll Cardiol. 2024;83(19):1870-1882.
- Zhang L, Li L, Andell P, et al. Attention-Deficit/Hyperactivity Disorder Medications and Long-Term Risk of Cardiovascular Diseases. JAMA Psychiatry. 2024;81(2):178-187.
- STRATTERA (atomoxetine). US Prescribing Information. DailyMed, version 69, effective June 30, 2026.
- Zhang Y, Yao H, Andell P, Chang Z, Li L. ADHD Medication and the Risk of Recurrent Cardiovascular Events After Acute Myocardial Infarction: A Population-Based Cohort Study. Am J Prev Med. 2026;71(5):108510.
- Groff D, Tuan WJ, Holt K, Latronica JR, Bone C. Risk Factors for Adverse Cardiac Events in Individuals Prescribed Stimulants Across the Lifespan. J Atten Disord. 2025;29(8):628-634.