Nicotine can increase heart rate and blood pressure and make the heartbeat feel faster, harder or more noticeable. Cigarettes, vapes and nicotine pouches all deliver nicotine, but they expose the body to different additional chemicals and should not be considered medically equivalent.
Yes. Nicotine can increase heart rate, raise blood pressure and stimulate the sympathetic “fight-or-flight” nervous system, which may cause a racing, pounding or fluttering sensation. Cigarettes, most nicotine vapes and nicotine pouches such as ZYN can all produce nicotine-related symptoms. However, a palpitation after nicotine does not prove that an electrical arrhythmia occurred; sinus tachycardia and heightened heartbeat awareness are also possible. Persistent, markedly irregular or recurrent palpitations, particularly with chest pain, severe shortness of breath, fainting or severe dizziness, deserve medical assessment.
When Nicotine-Related Palpitations Need Urgent Care
Seek urgent or emergency medical care if palpitations after smoking, vaping or nicotine-pouch use occur with:
- significant chest pain or pressure;
- severe or sudden shortness of breath;
- fainting or loss of consciousness;
- collapse;
- severe dizziness or near-fainting;
- a sustained very rapid or markedly irregular heartbeat;
- confusion or reduced responsiveness;
- seizure;
- severe vomiting with weakness;
- difficulty breathing; or
- rapidly worsening symptoms.
Do not assume serious symptoms are simply anxiety or “too much nicotine.”
How Does Nicotine Affect the Heart?
Nicotine is a psychoactive and highly addictive drug that stimulates the sympathetic nervous system.
Shortly after exposure, it can:
- increase heart rate;
- raise blood pressure;
- narrow blood vessels;
- increase cardiac workload; and
- increase alertness and nervous-system stimulation.
These effects can make the heartbeat feel:
- fast;
- pounding;
- forceful;
- fluttering; or
- unusually noticeable.
Nicotine may simply make the heart’s normal sinus pacemaker beat faster. This is called sinus tachycardia. An ECG is needed if clinicians need to distinguish sinus tachycardia from AF, SVT, frequent premature beats or another electrical rhythm.
Can Nicotine Cause Skipped or Irregular Heartbeats?
Nicotine is a cardiovascular stimulant and can increase heartbeat awareness. Some people report skipped, fluttering or irregular sensations after nicotine use.
However, the sensation by itself cannot tell us whether the person experienced:
- a PAC;
- a PVC;
- sinus tachycardia;
- atrial fibrillation;
- SVT;
- an anxiety-related pounding heartbeat; or
- normal rhythm with heightened awareness.
Do Not Diagnose the Rhythm From the Sensation
If nicotine repeatedly produces an irregular or sustained racing sensation, recording the rhythm during an episode is much more useful than assuming every episode is a nicotine-induced arrhythmia.
Cigarettes, Vaping, Nicotine Pouches and NRT Are Not the Same
| Product | Nicotine? | Other important exposure | Key point |
|---|---|---|---|
| Cigarettes | Yes | Combustion smoke, carbon monoxide and many toxic chemicals | Highest overall health risk among these common products. |
| Nicotine vapes | Usually | Aerosol containing additional chemicals and potentially harmful particles | Not harmless; long-term cardiovascular effects continue to be studied. |
| Nicotine pouches | Yes | No smoke or inhaled aerosol | Still addictive and capable of nicotine-related cardiovascular effects. |
| FDA-approved nicotine replacement therapy | Yes | Controlled therapeutic nicotine delivery | Designed to help smoking cessation and substantially safer than continued cigarette smoking. |
Saying that nicotine pouches or nicotine replacement avoid cigarette combustion does not mean they are identical or completely risk-free. Cigarette smoking adds major cardiovascular and respiratory harms from smoke and carbon monoxide in addition to nicotine.
Why Cigarettes Can Cause Heart Palpitations
Cigarettes expose the cardiovascular system to both nicotine and smoke.
Nicotine increases heart rate and blood pressure, while cigarette smoke contains carbon monoxide and numerous toxic chemicals.
Carbon monoxide reduces the blood’s oxygen-carrying capacity, increasing cardiovascular stress.
Smoking is also a cardiovascular risk factor and is associated with increased risk of heart attack, stroke and arrhythmias.
Smoking Is More Than a Nicotine Exposure
This distinction matters when comparing cigarettes with nicotine pouches or medically approved nicotine replacement. Removing combustion exposure can lower risk, but continuing nicotine can still affect heart rate, blood pressure and dependence.
Can Vaping Cause Heart Palpitations?
Yes. Most e-cigarettes contain nicotine, and nicotine can acutely raise heart rate and blood pressure.
Studies have also observed increased sympathetic nervous-system activity after vaping.
Vape aerosol is not simply water vapor. Depending on the device and liquid, it can contain substances such as:
- ultrafine particles;
- metals;
- volatile organic compounds;
- flavoring chemicals; and
- other potentially harmful compounds.
Scientists are still studying the long-term cardiovascular consequences of these exposures.
Do Not Switch From Vaping Back to Cigarettes Because of Palpitations
Cigarette smoking exposes you to combustion products and carries major cardiovascular, lung and cancer risks. If vaping repeatedly causes palpitations, the better goal is to discuss reducing and stopping nicotine exposure using an evidence-based cessation strategy rather than returning to combustible cigarettes.
Why Can Disposable or High-Nicotine Vapes Cause Strong Symptoms?
Nicotine delivery varies substantially between products.
Some modern e-cigarettes can deliver large amounts of nicotine, and repeated use throughout the day may lead to substantial exposure.
Higher nicotine exposure can increase the likelihood of symptoms such as:
- racing or pounding heartbeat;
- nausea;
- dizziness;
- headache;
- trembling;
- anxiety; and
- restlessness.
Product labeling and actual nicotine delivery can also vary by device and how intensely it is used.
Can ZYN Cause Heart Palpitations?
ZYN is an oral nicotine-pouch brand. The pouch is placed between the gum and lip, allowing nicotine to be absorbed without smoking or inhaling aerosol.
Because it delivers nicotine, it can still produce nicotine-related effects, including a faster heartbeat, increased blood pressure and heightened cardiovascular stimulation.
Therefore, it is medically plausible for someone to experience racing or pounding heartbeats after using a nicotine pouch.
The absence of combustion removes many toxic exposures found in cigarettes, but nicotine itself remains pharmacologically active.
Is ZYN Safer Than Cigarettes?
This question requires a careful distinction between lower risk and no risk.
In the United States, the FDA has authorized specific ZYN nicotine-pouch products for sale.
In June 2026, the FDA also authorized specific 3 mg and 6 mg ZYN products to be marketed with a modified-risk claim stating that using ZYN instead of cigarettes lowers the risk of several serious diseases, including heart disease, compared with continued cigarette smoking.
This is a product-specific relative-risk finding.
What the FDA Decision Does — and Does Not — Mean
It does mean:
- specific authorized ZYN products expose users to substantially fewer harmful constituents than cigarettes;
- completely switching away from cigarettes can reduce exposure to combustion-related toxic chemicals; and
- FDA concluded that the specific modified-risk claim met its legal scientific standard.
It does not mean:
- ZYN is harmless;
- ZYN is “FDA approved” as a safe consumer product;
- nicotine no longer affects heart rate or blood pressure;
- everyone should start using nicotine pouches; or
- using both cigarettes and pouches provides the same benefit as completely switching.
Adults who do not currently use tobacco or nicotine products should not start simply because one product has lower risk than cigarettes.
What About Other Nicotine Pouches?
ZYN is only one brand. Other oral nicotine pouches vary in nicotine content, formulation and regulatory status.
The American Heart Association notes that cardiovascular evidence specific to newer oral nicotine pouches remains limited and that product composition can differ substantially.
Therefore, results from one specific authorized product should not automatically be applied to every nicotine pouch on the market.
Some pouches use nicotine without tobacco leaf, including synthetic nicotine products. The nicotine can still produce addiction and cardiovascular stimulation.
What Happens When Nicotine and Caffeine Are Used Together?
Nicotine and caffeine are both stimulants.
Someone who uses:
- a vape plus coffee;
- a nicotine pouch plus an energy drink;
- cigarettes plus large amounts of caffeine; or
- pre-workout stimulants plus nicotine
may experience stronger awareness of heart rate, tremor, nervousness or anxiety.
If palpitations repeatedly occur only when stimulants are combined, reducing the combined exposure is reasonable.
See our guide to caffeine and heart palpitations .
Nicotine, Anxiety and Heart Palpitations
Nicotine stimulates the same sympathetic nervous system involved in the body’s fight-or-flight response.
This can create a feedback loop:
nicotine → faster heartbeat → worry about the heartbeat → adrenaline → stronger heartbeat → greater awareness.
In someone prone to panic, the combination may produce:
- racing heartbeat;
- chest tightness;
- rapid breathing;
- trembling;
- sweating;
- dizziness; and
- fear that something serious is happening.
A persistent or markedly irregular heartbeat should not automatically be labeled anxiety simply because nicotine triggered the episode.
What Happens if You Get Too Much Nicotine?
Excessive nicotine exposure can cause toxicity.
Possible early symptoms include:
- nausea;
- vomiting;
- abdominal discomfort;
- dizziness;
- headache;
- agitation or restlessness;
- tremor;
- rapid heartbeat; and
- pounding palpitations.
More severe nicotine poisoning can cause abnormal rhythms, low blood pressure, seizures, impaired breathing, reduced consciousness and other life-threatening complications.
Nicotine Poisoning Requires Medical Attention
Severe vomiting, breathing difficulty, seizures, fainting, confusion, abnormal heart rhythm or reduced responsiveness after a substantial nicotine exposure should be treated as a medical emergency.
Why Combining Nicotine Products Can Cause Problems
Someone may smoke cigarettes while also vaping or using nicotine pouches. Another person may use several pouches close together.
Combining products can increase total nicotine exposure and make symptoms such as nausea, dizziness, tremor and rapid heartbeat more likely.
It can also strengthen dependence because nicotine is being delivered repeatedly throughout the day.
More Products Do Not Mean Better Harm Reduction
For an adult cigarette smoker, the largest reduction in smoke-related exposure comes from completely stopping combustible cigarettes rather than continuing to smoke while adding another nicotine product.
Can Stopping Nicotine Cause Heart Palpitations?
Palpitations are not one of the classic defining symptoms of nicotine withdrawal.
More typical withdrawal symptoms include:
- cravings;
- irritability;
- restlessness;
- anxiety;
- difficulty concentrating;
- sleep disturbance;
- increased appetite; and
- low mood.
Anxiety, restlessness and sleep disruption during withdrawal may make heartbeats more noticeable.
But new persistent or clearly irregular palpitations after quitting should not automatically be attributed to withdrawal.
We cover this separately in can stopping smoking cause heart palpitations?
What About Nicotine Patches, Gum and Lozenges?
FDA-approved nicotine replacement therapy, or NRT, is different from commercial tobacco products.
NRT is designed to provide controlled nicotine exposure while reducing cigarette withdrawal and helping smokers quit.
Common forms include:
- nicotine patches;
- nicotine gum; and
- nicotine lozenges.
Evidence-based smoking-cessation medicines are substantially safer than continued cigarette smoking.
Excessive dosing or excessive total nicotine exposure can still produce symptoms. Fast, pounding or irregular heartbeat while using nicotine replacement should be discussed with a healthcare professional.
Use nicotine replacement according to the product instructions and your clinician’s or pharmacist’s advice, particularly if you have significant cardiovascular disease or a known rhythm disorder.
Should You Stop Nicotine if It Causes Palpitations?
If smoking, vaping or nicotine pouches repeatedly trigger palpitations, reducing and ultimately stopping nicotine exposure is reasonable and provides broader health benefits.
However, someone who currently smokes cigarettes should not respond to pouch- or vape-related palpitations by simply returning to unrestricted cigarette smoking.
An evidence-based cessation plan may include:
- behavioral support;
- FDA-approved nicotine replacement therapy;
- varenicline when appropriate;
- bupropion when appropriate; and
- follow-up with a clinician or smoking-cessation service.
The Long-Term Goal Is Tobacco- and Nicotine-Free Health
For adults who smoke, completely switching away from combustible cigarettes may reduce harm, but fully quitting tobacco and nicotine provides the greatest long-term health benefit.
How Are Nicotine-Associated Palpitations Evaluated?
If symptoms recur, the goal is to determine what rhythm is actually occurring and whether nicotine is the likely trigger.
History
Your clinician may ask:
- whether you smoke, vape or use nicotine pouches;
- which product and nicotine strength you use;
- how frequently you use it;
- whether several nicotine products are used together;
- whether caffeine or energy drinks are also involved;
- how quickly symptoms start after nicotine exposure;
- how long the palpitations last;
- whether the pulse feels regular or irregular;
- whether symptoms improve when nicotine is avoided;
- medicines and supplements;
- known cardiovascular disease; and
- whether chest pain, dizziness, breathlessness or fainting occurs.
ECG
A 12-lead ECG during symptoms can help distinguish sinus tachycardia, premature beats, atrial fibrillation, SVT or another rhythm.
If symptoms repeatedly stop before the ECG is recorded, Holter, patch or event monitoring may help establish whether nicotine exposure corresponds with an actual rhythm abnormality.
See heart palpitations despite a normal ECG .
Blood pressure
Because nicotine can temporarily raise blood pressure, recording both pulse and blood pressure may be useful when it can be done safely.
See heart palpitations and blood pressure .
Other testing
When the clinical picture suggests another cause, testing may include:
- blood count for anemia;
- thyroid function;
- electrolytes;
- echocardiography; or
- exercise testing.
What Can You Do During Mild Nicotine-Related Palpitations?
If you otherwise feel well and have no emergency warning signs:
- Stop further nicotine exposure for the moment.
- Sit somewhere safe.
- Avoid additional caffeine, energy drinks or other stimulants.
- Note when the episode began.
- Notice whether the pulse feels regular or irregular.
- Use slow, comfortable breathing if anxiety is contributing.
- Do not take extra heart medicine to counteract nicotine.
Do Not Try to “Balance Out” Nicotine With Medication or Supplements
Do not take extra beta-blockers, antiarrhythmics, potassium, high-dose magnesium or another person’s prescription medicine simply because your heartbeat became fast after nicotine.
Dr. Albana’s Note
When someone tells me, “My heart races after I vape or use a nicotine pouch,” I first ask how much nicotine they are actually getting. Someone taking occasional puffs is different from a person vaping repeatedly throughout the day, drinking energy drinks and also using nicotine pouches. I also separate the products medically. Cigarettes add carbon monoxide and combustion toxins; vapes expose the lungs to aerosol; pouches avoid those exposures but still deliver nicotine. If the symptoms repeatedly follow nicotine, reducing exposure is reasonable, but I do not diagnose the rhythm from that history alone. A persistent or irregular sensation is much more useful when we can capture it on an ECG or ambulatory monitor.
When Should You Make a Medical Appointment?
Arrange medical assessment when:
- palpitations occur repeatedly after nicotine;
- episodes are becoming more frequent;
- they last several minutes or longer;
- the pulse feels markedly irregular;
- you experience repeated dizziness or weakness;
- you develop breathlessness;
- you have known heart disease;
- you have a previous arrhythmia;
- symptoms occur even when you are not using nicotine;
- you suspect you are receiving excessive nicotine from several products;
- palpitations are making it difficult to quit smoking or vaping; or
- the symptoms have changed significantly from your previous pattern.
For broader triage guidance, see when to worry about heart palpitations .
Urgent Warning Signs
Seek urgent or emergency medical care for:
- significant chest pain or pressure;
- severe or sudden shortness of breath;
- fainting or loss of consciousness;
- collapse;
- severe dizziness or near-fainting;
- a sustained very rapid or markedly irregular heartbeat while feeling seriously unwell;
- seizure;
- severe vomiting with weakness or altered consciousness;
- difficulty breathing;
- confusion or signs of shock; or
- rapidly worsening symptoms.
Most Asked Questions
Can nicotine cause heart palpitations?
Yes. Nicotine can increase heart rate and blood pressure and stimulate the sympathetic nervous system. This may feel like racing, pounding or unusually strong heartbeats.
Can vaping cause heart palpitations?
Yes. Most vapes contain nicotine, which can increase heart rate. Vape aerosol also contains other substances whose cardiovascular effects continue to be studied.
Can ZYN cause heart palpitations?
ZYN nicotine pouches deliver nicotine without smoke or inhaled aerosol. Because nicotine raises heart rate and cardiovascular stimulation, some users may notice racing or pounding heartbeats after using a pouch.
Can nicotine pouches cause a racing heart?
Yes. Nicotine absorbed from oral pouches can increase heart rate and blood pressure. Product strengths and total daily nicotine exposure vary.
Is ZYN safer than smoking cigarettes?
Specific FDA-authorized ZYN products have been permitted to carry a modified-risk claim indicating lower risk of several serious diseases when used instead of cigarettes. This does not mean ZYN is harmless, nicotine-free or FDA approved as a safe product.
Can nicotine cause skipped heartbeats?
Nicotine can increase heartbeat awareness, and some people report skipped or fluttering sensations. Symptoms alone cannot establish whether a PAC, PVC or another arrhythmia occurred.
Can vaping cause an irregular heartbeat?
Nicotine can affect cardiovascular and autonomic function, but an irregular sensation does not identify the rhythm. Recurrent or sustained irregular palpitations should be documented with ECG or ambulatory monitoring.
Can too much nicotine cause palpitations?
Yes. Excess nicotine can cause a rapid or pounding heartbeat along with nausea, vomiting, dizziness, tremor and agitation. Severe poisoning can cause abnormal rhythms, seizures and breathing problems.
Can nicotine and caffeine together cause palpitations?
Both are stimulants. Combining nicotine with coffee, energy drinks or other stimulant products may make a fast or pounding heartbeat more noticeable.
Why does my heart race after using a nicotine pouch?
Nicotine activates the sympathetic nervous system and can raise heart rate. The amount absorbed depends on the product, nicotine strength, frequency of use and individual sensitivity.
Can quitting nicotine cause heart palpitations?
Palpitations are not a classic defining nicotine-withdrawal symptom, although withdrawal-related anxiety, restlessness and sleep disruption may make heartbeats more noticeable. Persistent or irregular symptoms should not automatically be blamed on withdrawal.
Can nicotine patches or gum cause palpitations?
Nicotine replacement therapy still delivers nicotine, so excessive exposure can produce cardiovascular symptoms. When used correctly, FDA-approved quit-smoking medicines are substantially safer than continued cigarette smoking.
Should I stop vaping if it causes palpitations?
Repeated nicotine-associated palpitations are a good reason to reduce and stop exposure. If you currently smoke cigarettes as well, use an evidence-based cessation plan rather than returning to or increasing combustible cigarette smoking.
When should nicotine-related heart palpitations worry me?
Seek urgent care for palpitations accompanied by chest pain, severe shortness of breath, fainting, collapse, severe dizziness, seizure or a sustained very rapid or markedly irregular heartbeat while you feel seriously unwell.
Related Heart Palpitation Guides
Medical References
- American Heart Association. What to Know About Smoking, Nicotine and Vaping. American Heart Association .
- American Heart Association. What’s in a Vape? Why E-Cigarettes Are Hardly Harmless. Published June 30, 2026. American Heart Association .
- American Heart Association. Impact of Smokeless Oral Nicotine Products on Cardiovascular Disease: Implications for Policy, Prevention and Treatment. Circulation. 2024. American Heart Association .
- Centers for Disease Control and Prevention. Health Effects of Vaping. Updated January 31, 2025. CDC .
- U.S. Food and Drug Administration. FDA Authorizes 20 ZYN Nicotine Pouches to Be Marketed With Specific Modified Risk Claim. June 30, 2026. FDA .
- U.S. Food and Drug Administration. Nicotine Pouch Products Authorized by the FDA. FDA .
- U.S. Food and Drug Administration. The Relative Risks of Tobacco Products. FDA .
- Centers for Disease Control and Prevention. Quit-Smoking Medicines Are Much Safer Than Smoking. CDC .
- MedlinePlus. Nicotine Poisoning. U.S. National Library of Medicine. MedlinePlus .
- MedlinePlus. Heart Palpitations. U.S. National Library of Medicine. MedlinePlus .
About the Medical Team
Dr. Albana Greca, MBBS, MMedSc
Family Physician / General Practitioner
Dr. Albana Greca has more than 20 years of experience in primary care, general medicine, chronic disease management, prevention, patient education and digital health.
Dr. Benard Shehu, MBBS, MS
Cardiologist
Dr. Benard Shehu has more than 19 years of cardiovascular experience, including clinical experience relevant to arrhythmias and cardiovascular disease.