Can I check my heart rate at home while taking Ozempic?

Yes. Check your pulse at rest, ideally at the same time each morning before caffeine. A watch or home blood pressure cuff can give a reading. Bring a week of readings to your next visit if you notice a change.

Does a higher Ozempic dose raise heart rate more?

The Ozempic label reports a combined 2 to 3 beat per minute rise for the 0.5 mg and 1 mg doses, without a separate figure for each dose. Talk with your prescriber if your pulse changes after a dose increase.

Does Wegovy affect heart rate the same way?

Wegovy contains the same drug, semaglutide, at a higher dose for weight management. The SELECT trial used that 2.4 mg dose and found fewer major cardiovascular events than placebo. Ask your prescriber how the two labels compare for your situation.

Is it heart palpitations or anxiety?

Anxiety is a common cause of palpitations, but you cannot always tell the difference at home. MedlinePlus advises seeing a provider if you have never had palpitations before. Chest pain, fainting, or shortness of breath need emergency care.

Should I stop Ozempic if my heart feels fast?

Do not stop or change your dose without talking to your prescriber. A fast heartbeat often has another cause, such as dehydration or low blood sugar. Your provider can check your pulse, rhythm, and blood tests to find the cause.

Does Ozempic Raise Your Heart Rate?

The short answer: Yes, a little. The FDA label for Ozempic says the 0.5 mg and 1 mg doses raised average heart rate by 2 to 3 beats per minute in placebo-controlled trials. That is a small change that most people never notice. A heart that feels like it is racing on Ozempic more often points to something else, such as dehydration or low blood sugar, and is worth checking.

How much does Ozempic raise heart rate?

The Ozempic prescribing information lists "Increases in Heart Rate" in its adverse reactions section. It states that in placebo-controlled trials, Ozempic 0.5 mg and 1 mg caused a mean increase in heart rate of 2 to 3 beats per minute. People on placebo had a mean decrease of 0.3 beats per minute.

The label for the tablet form of semaglutide (sold as Rybelsus and as Ozempic tablets) reports a similar effect. In its placebo-controlled trials, the 7 mg and 14 mg tablets raised mean heart rate by 1 to 3 beats per minute, with no change on placebo.

To put that in context, MedlinePlus says a normal resting heart rate is 60 to 100 beats per minute. A rise of 2 or 3 beats moves most people only slightly within that range. Keep in mind these are averages. Some people see no change, and some see a larger one.

The label also covers a related worry. In a thorough QTc study, semaglutide did not prolong the QTc interval (a measure of the heart's electrical recovery) at doses up to 1.5 mg at steady state.

Why does semaglutide speed up the heart?

Researchers have not fully pinned down the cause. A 2017 review in Cardiovascular Diabetology said the mechanism "remains to be elucidated." The authors pointed to two likely paths: a direct effect on the sinus node (the heart's natural pacemaker) and stimulation of the sympathetic nervous system.

The direct path has some support. A 2018 study in Endocrinology found GLP-1 receptor messenger RNA in human heart tissue, including the sinoatrial node. Semaglutide works by activating this same receptor, so it can act on the heart as well as the pancreas and brain.

The same review found that the size of the effect varies within the drug class. Short-acting GLP-1 drugs such as exenatide and lixisenatide caused brief rises of 1 to 3 beats per minute. Long-acting drugs caused larger and more sustained increases over the day and night. The authors linked the effect to how long each drug stays active. Semaglutide is long-acting, with a half-life of about one week, which may explain why the rise persists between weekly doses.

Is a higher heart rate on Ozempic dangerous?

For most people, the large outcome trials suggest it is not. Two large semaglutide trials tracked heart attacks, strokes, and cardiovascular deaths. Both found fewer events with the drug than with placebo.

SUSTAIN-6. This trial of 3,297 adults with type 2 diabetes at high cardiovascular risk compared weekly semaglutide (0.5 mg or 1 mg) with placebo. Major cardiovascular events (cardiovascular death, nonfatal heart attack, or nonfatal stroke) occurred in 6.6% of the semaglutide group and 8.9% of the placebo group. The hazard ratio was 0.74. The trial was designed to show safety, but the result also met the bar for fewer events.
SELECT. This trial enrolled 17,604 adults with existing cardiovascular disease and overweight or obesity, but no diabetes. It tested semaglutide 2.4 mg, the dose used in Wegovy, not Ozempic. Over a mean follow-up of 39.8 months, major cardiovascular events occurred in 6.5% of the semaglutide group and 8.0% of the placebo group (hazard ratio 0.80).

Based on SUSTAIN-6, the Ozempic label now includes an indication to reduce the risk of major cardiovascular events in adults with type 2 diabetes and established cardiovascular disease. You can read more about these results in our post on Ozempic and heart health.

There is one caution. The 2017 review noted that a pronounced heart rate increase may be linked with worse outcomes in people with advanced heart failure. If you have heart failure or a known rhythm problem, tell your prescriber. They may want to track your pulse more closely.

If high blood pressure is part of your heart risk, hypertension.md covers home readings and treatment goals.

What else can make your heart race on Ozempic?

A pounding or racing heart that you can clearly feel is larger than the label's average change. Other causes are more likely, and several of them link back to Ozempic's other effects.

Dehydration. Nausea, vomiting, and diarrhea are common on Ozempic, and eating and drinking less adds to the fluid loss. MedlinePlus lists a rapid heartbeat as a sign of severe dehydration, along with dizziness, confusion, and very dark urine. The Ozempic label also warns about acute kidney injury due to volume depletion.
Low blood sugar. Ozempic alone rarely causes hypoglycemia. The label says the risk rises when it is combined with insulin or a sulfonylurea. MedlinePlus lists a fast or pounding heartbeat as a symptom of low blood sugar, which it defines as below 70 mg/dL. Our guide to Ozempic and low blood sugar explains the warning signs.
Common everyday triggers. MedlinePlus names anxiety, caffeine, decongestants such as pseudoephedrine, diet pills, exercise, fever, and stimulant drugs as causes of palpitations.
An abnormal heart rhythm. MedlinePlus notes that low potassium and other electrolyte problems make an abnormal rhythm more likely. Ongoing vomiting or diarrhea can lower potassium.

If stomach side effects are driving the problem, our post on managing Ozempic side effects covers ways to keep fluids up.

When should a fast heartbeat get medical attention?

MedlinePlus advice on palpitations sets out clear thresholds. Call 911 or your local emergency number if a fast or irregular heartbeat comes with any of these:

Loss of alertness or consciousness
Chest pain
Shortness of breath
Unusual sweating
Dizziness or lightheadedness

Contact your provider right away if any of the following apply:

Your pulse is more than 100 beats per minute without exercise, anxiety, or fever.
You often feel extra heartbeats (more than 6 per minute, or in groups of 3 or more).
You have new or different palpitations.
You have heart disease, or risk factors such as diabetes, high blood pressure, or high cholesterol.

Most people on Ozempic have diabetes, so the last point applies to many readers. New palpitations are worth a call even if they feel mild. If you use insulin or a sulfonylurea, check your blood sugar when your heart starts racing. Low blood sugar needs treatment right away.

Before an appointment, write down your resting pulse at the same time each day for a week. Note when symptoms happen, how long they last, and whether they track with your weekly dose, meals, or fluid intake. This record helps your provider tell a small drug effect from a rhythm problem.

The bottom line

Ozempic does raise heart rate, but only by an average of 2 to 3 beats per minute in the trials on its label. The likely cause is the drug acting on GLP-1 receptors in the heart's pacemaker tissue and on the nervous system. Large trials found fewer major cardiovascular events with semaglutide, not more. A racing heart you can feel is a different matter. Check for dehydration and low blood sugar, and get urgent care for chest pain, fainting, or shortness of breath.

Last updated: October 2026. This article is for informational purposes only and does not constitute medical advice. Talk with your prescriber about any change in your heart rate or rhythm while taking Ozempic.