Tirzepatide is not a blood pressure drug, and neither label lists blood pressure as a use. The main SURMOUNT-1 paper does report better heart and metabolic measures, blood pressure among them, in people who lost weight on the drug. We do not print a blood pressure number here because it is not in our verified source list. If you take a blood pressure pill, tell your prescriber before you start. Read our tirzepatide guide for the basics first.
Key takeaways
- Zepbound is approved for chronic weight management and for obstructive sleep apnea with obesity; Mounjaro is approved for type 2 diabetes. Neither is approved to lower blood pressure.
- SURMOUNT-1 reported better heart and metabolic measures as secondary outcomes alongside a mean weight loss of 15.0% to 20.9% over 72 weeks.
- The Zepbound label's adverse reaction table includes low blood pressure (hypotension) as a reported reaction, and the label warns that vomiting and diarrhea can cause fluid loss.
- Neither label lists high blood pressure as a common adverse reaction.
- Any change to a blood pressure medicine while on tirzepatide is a prescriber decision.
Does tirzepatide lower blood pressure?
The short answer is that the labels do not claim it, and the trials were not built to prove it. Tirzepatide's approved uses are weight management, sleep apnea with obesity, and type 2 diabetes. In SURMOUNT-1, blood pressure was one of several heart and metabolic measures tracked as a secondary outcome. The authors reported gains in those measures for people on tirzepatide compared with placebo. Weight loss in that trial was large, which is the most likely reason for those changes, but the trial cannot separate the drug's direct effects from the effect of losing weight.
| Question | What the sources say |
|---|---|
| Is tirzepatide approved to treat high blood pressure? | No. Zepbound: chronic weight management (November 8, 2023) and moderate to severe obstructive sleep apnea with obesity (December 20, 2024). Mounjaro: type 2 diabetes (May 13, 2022). |
| Did SURMOUNT-1 measure blood pressure? | Yes, as a secondary cardiometabolic measure; the publication reports improvements with tirzepatide versus placebo. |
| Does this page print the blood pressure change? | No. That number is not in our verified list, so we do not print it. |
| Is low blood pressure on the label? | Yes. Hypotension appears in the Zepbound adverse reaction table; the label does not describe it as one of the most common reactions. |
| Is high blood pressure on the label? | No, it is not listed as a common adverse reaction on either label. |
Source: Zepbound and Mounjaro prescribing information (DailyMed); SURMOUNT-1, Jastreboff et al., NEJM 2022.
How much weight did SURMOUNT-1 participants lose?
Because these changes track with weight loss, the weight numbers are the ones worth knowing. SURMOUNT-1 enrolled 2,539 adults with obesity or overweight without diabetes and followed them for 72 weeks.
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Try the BMI Calculator →| Arm | Mean weight change at 72 weeks | Lost at least 5% | Lost at least 20% |
|---|---|---|---|
| Placebo | -3.1% | 35% | 3% |
| Tirzepatide 5 mg | -15.0% | 85% | Not reported in the summary |
| Tirzepatide 10 mg | -19.5% | 89% | 50% |
| Tirzepatide 15 mg | -20.9% | 91% | 57% |
Source: SURMOUNT-1, Jastreboff et al., NEJM 2022 (treatment-regimen estimand).
The trial also reported that the most common adverse events were gastrointestinal, mostly mild to moderate, and mostly during dose escalation.
Can tirzepatide cause low blood pressure?
It can, and the label says so in two ways. First, hypotension, which means low blood pressure, appears in the Zepbound adverse reaction table as a reaction reported more often with the drug than with placebo. It is not on the label's list of the most common reactions, which are stomach effects, injection site reactions, fatigue, hypersensitivity, burping, hair loss and reflux.
Second, the label warns about dehydration. Nausea, vomiting and diarrhea are the most common reactions, and the label links fluid loss from these events to acute kidney injury. Fluid loss is also a common cause of feeling faint or dizzy when you stand. If you get lightheaded, especially during a dose increase or a stomach bug, call your prescriber. Drink fluids as they advise. Do not skip or lower a blood pressure pill on your own.
If you already take a blood pressure medicine, weight loss can change how much of it you need. The tirzepatide label does not give a rule for that. It is a prescriber decision, so bring home readings to your visits if you have a cuff.
Does tirzepatide cause high blood pressure?
High blood pressure is not listed as a common adverse reaction on the Zepbound or Mounjaro label. In SURMOUNT-1 the heart and metabolic measures got better, not worse. What both labels do note is a small average rise in heart rate with tirzepatide; the label describes it as a mean increase of a few beats per minute and says its clinical relevance is uncertain. A faster pulse is not the same as higher blood pressure, but if you feel palpitations, that is worth a call.
Heart safety: what SURPASS-4 showed
People with high blood pressure often ask about heart risk more broadly. SURPASS-4 compared tirzepatide with insulin glargine in adults with type 2 diabetes and high cardiovascular risk. The trial found no increase in major adverse cardiovascular events with tirzepatide. That is a safety finding, not proof of heart benefit, and it was in people with diabetes rather than in a blood pressure population.
What this means for compounded tirzepatide
All of the numbers above come from branded tirzepatide used in trials. Compounded tirzepatide is not FDA approved, is not interchangeable with Zepbound or Mounjaro, and has no trial data of its own. The same label cautions still apply: tell your prescriber about every blood pressure medicine, watch for dizziness during dose steps, and report fluid loss. Prescriptions for FormBlends compounded tirzepatide are written by independent, state-licensed clinicians of Recess MD LLC, who decide whether it is appropriate for you. See pricing or begin the assessment.
Frequently Asked Questions
Does tirzepatide lower blood pressure?
It is not approved for that, and the label makes no such claim. SURMOUNT-1 reported better heart and metabolic measures, including blood pressure, along with large weight loss. The exact change is not in our verified sources, so this page does not print it.
Can tirzepatide cause low blood pressure?
Yes, hypotension is listed in the Zepbound adverse reaction table, though it is not among the most common reactions. Fluid loss from vomiting or diarrhea can also lower blood pressure. Call your prescriber if you feel faint or dizzy.
Does tirzepatide cause high blood pressure?
High blood pressure is not listed as a common adverse reaction on either label. The label does note a small average rise in heart rate. Report palpitations or a sustained fast pulse to your prescriber.
Can I take tirzepatide if I have high blood pressure?
Many people with high blood pressure took tirzepatide in the trials, and Zepbound's weight management indication covers adults with a BMI of 27 or higher plus a weight-related condition. Whether it is right for you, and whether your blood pressure medicine needs to change, is a prescriber decision.
Sources
- Zepbound (tirzepatide) prescribing information, DailyMed, National Library of Medicine, revised 08/2026.
- Mounjaro (tirzepatide) prescribing information, DailyMed, National Library of Medicine, revised 08/2026.
- Tirzepatide Once Weekly for the Treatment of Obesity (SURMOUNT-1), Jastreboff et al., New England Journal of Medicine, 2022.
- Tirzepatide versus insulin glargine in type 2 diabetes and increased cardiovascular risk (SURPASS-4), Del Prato et al., The Lancet, 2021.
- SURMOUNT-1 study record (NCT04184622), ClinicalTrials.gov.
Next steps
Related reading: tirzepatide and heart palpitations, Zepbound and dizziness, and does tirzepatide help with inflammation. Browse the tirzepatide hub for every other tirzepatide question. Talk to a clinician before you start or change any blood pressure medicine. Compounded tirzepatide is not FDA approved and is not interchangeable with Zepbound or Mounjaro; a licensed provider decides whether it is appropriate for you.
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