As many as 1 in every 8 Americans have used medications like semaglutide (Ozempic, Wegovy) for weight loss. Semaglutide works by helping you feel full sooner and longer. Available as a pill or injection depending on the specific medication, semaglutide belongs to the GLP-1 class of drugs originally used to treat type 2 diabetes, but is now widely known for its effects on weight loss. For example, though Ozempic is only FDA-approved to treat type 2 diabetes, it is practically synonymous with weight loss.
In fact, people taking semaglutide commonly lose 10% or more of their body weight and see their blood pressure drop by about five points. Mounting evidence shows that semaglutide typically lowers blood pressure and can even reduce the need for blood pressure-specific medications, though any medical decisions should be made by your doctor.
The Good News: Why Semaglutide Usually Lowers Blood Pressure
Patients taking semaglutide usually lose weight and improve their blood sugar regulation, which frequently goes hand in hand with lowered blood pressure. Semaglutide is a peptide that mimics a hormone called GLP-1 (glucagon-like peptide-1). This hormone influences digestion so that food stays in your stomach longer, helping you feel full for a longer period of time and reducing food cravings.
Obesity is a major risk factor for high blood pressure, so by promoting weight loss, semaglutide often leads to a meaningful drop in blood pressure, including for people whose readings remain high despite taking blood pressure medications.
The Science: How Semaglutide Affects Your Heart and Blood Vessels
Semaglutide lowers blood pressure primarily by treating obesity, a key driver of hypertension and other cardiovascular diseases. Excess body weight puts stress on the heart and blood vessels, and too much body fat leads to chronic inflammation that damages the cardiovascular system over time. Obesity also drives up blood pressure by increasing salt retention and overactivating the nervous system.
Semaglutide can counteract these effects by helping with overall weight loss, which in turn lowers body fat and reduces the effects of obesity. People taking semaglutide also may eat less salt because the drug curbs cravings for salty, high-fat snacks and foods. This reduction in sodium can further reduce blood pressure.
Semaglutide’s effects extend to decreasing the risk of heart failure, heart attacks, and other major cardiovascular problems by also reducing the inflammation that can damage blood vessels.
However, semaglutide is not a universally beneficial solution because excess weight is not the only possible factor for those with high blood pressure. Those considered within a normal weight range may still suffer from hypertension. This means while the effects of semaglutide generally help with cardiovascular health, losing weight is not a one-size-fits-all solution to treating hypertension.
The Confusion: Can Semaglutide Cause High Blood Pressure?
Semaglutide is unlikely to cause high blood pressure. It decreases inflammation and reduces body weight, both of which help lower blood pressure. That said, blood pressure spikes can happen for a range of reasons, including stress, pain, smoking, or interactions with other medications. If your at-home blood pressure readings are high, talk with your doctor about the possible causes.
Blood pressure may also increase if you stop taking semaglutide. Once you stop taking the medication, it’s normal to see a rebound in weight and blood pressure.
Can You Take a Semaglutide With High Blood Pressure?
It is generally safe to take semaglutide if you have high blood pressure. But if you’re already on blood pressure medications, adding semaglutide has the potential to push your readings too far in the other direction, causing low blood pressure (hypotension).
Discuss potential drug interactions with your doctor and follow any guidance they offer about dosage adjustments and at-home blood pressure monitoring.
How Do Liraglutide and Tirzepatide Affect Blood Pressure?
Semaglutide isn’t the only drug that mimics GLP-1. Other medications, including liraglutide (Saxenda) and tirzepatide (Zepbound), can also lead to weight loss and lower blood pressure.
Liraglutide and the Heart
Like semaglutide, liraglutide is a GLP-1 drug that is FDA-approved for weight management. It works the same way as semaglutide, but its effects tend to be smaller, both for weight loss and for blood pressure.
Tirzepatide and the Heart
Tirzepatide goes a step further than semaglutide because it mimics GLP-1 and another gut hormone called GIP (glucose-dependent insulinotropic polypeptide). It usually results in more weight loss than semaglutide and can have similar effects on blood pressure and cardiovascular health as semaglutide.
Your Next Steps
Semaglutide tends to lower blood pressure and is generally a net positive for heart health, but these positives aren’t a given. Weight loss is a common feature of taking semaglutide, so whether this will be beneficial for your situation depends on your current health status and weight.
If you and your doctor have identified weight loss as a goal, use a “test, don’t guess” approach for incorporating a semaglutide into your regimen: take regular at-home blood pressure readings and schedule follow-ups with your doctor to track whether the medication is working for you as intended.
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Written by
Eric Suni is a health writer and editor with over 15 years of experience. For more than seven years, he worked at Fred Hutch, Seattle's prestigious cancer research center, as a Science Writer and Information Specialist for the National Cancer Institute's Cancer Information Service. His work has been cited in more than 45 published medical journal articles and has been referenced by the CDC, FDA, The New York Times, and numerous state and local health departments.
Reviewed by
Ashley Robinson, PharmD
Ashley Robinson oversees daily operations at TelyRx's Clearwater pharmacy location, optimizes workflow efficiency, and ensures compliance with regulatory standards while maintaining a strong focus on patient safety and quality of care. She collaborates closely with clinical and operations teams to evaluate new medications, support formulary development, and implement process improvements that enhance both patient outcomes and team performance.
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