Can Mounjaro Give You High Blood Pressure? (October 2026)

01 · The answer

Does Mounjaro give you high blood pressure?

High blood pressure is not a listed side effect of Mounjaro in the UK patient leaflet. Common listed effects include dizziness and low blood pressure, and a fast pulse. Tell your prescriber about any new or lasting symptom, and you can report suspected side effects through the MHRA Yellow Card scheme.¹³

If you want the other side of the question, our guide on whether Mounjaro lowers blood pressure covers it, and how Mounjaro may help with blood pressure looks at the related question of benefit.

02 · What to do

The decisions you are actually facing

Most readers are in one of three positions, and each has a clear next step.

You already have high blood pressure and are thinking of starting. High blood pressure does not on its own rule out treatment, but it is something your prescriber must know about. Declare it, and list every blood pressure medicine you take. Our prescriber reviews your answers rather than running a scoring script. See using Mounjaro with high blood pressure for more detail.

You are already taking Mounjaro and your readings have changed. Do not stop or change anything on your own. Contact your prescriber or GP, tell them when the change began and what your readings are, and ask whether it needs review. Report it through the Yellow Card scheme as well.⁷

You feel unwell right now. Anything severe or sudden is a matter for urgent medical help, not a web page. Get medical help straight away: call 999, go to A&E or contact NHS 111.

The medicine itself is worth understanding properly: it is a prescription-only treatment used alongside a reduced-calorie diet and increased physical activity, and results vary from person to person.¹

03 · Our approach

How we handle blood pressure questions

Our free consultation is a short health questionnaire reviewed by a GPhC-registered prescriber. Payment is taken when you place the order; if the prescriber decides the treatment is not suitable, the order is refunded automatically in full. Repeat orders re-check suitability and nothing ships automatically, so a change in your health, including a new blood pressure diagnosis or new medicine, can be picked up at each reorder. Ongoing monthly reviews and dose-titration follow-ups are included.

That structure matters more than any single statistic. A medicine is safest when someone qualified looks at your whole picture, repeatedly, and you feel able to report changes. Our weight loss clinic page explains how the service fits together.

04 · What the label says

What the product information says

High blood pressure is not listed as a side effect in the UK patient leaflet; dizziness and low blood pressure, and a fast pulse, are listed as common (up to 1 in 10 people). Two documents matter: the Summary of Product Characteristics, written for healthcare professionals, and the patient information leaflet in every box.¹¹³

When you read the leaflet, look for three things. First, the section on what to know before using the medicine, which lists situations needing caution. Second, the section on other medicines, which matters if you take blood pressure treatment. Third, the section listing possible side effects, which also explains when to seek urgent help.

There is a distinction worth keeping in mind. A side effect is something the medicine itself has been shown to cause. A coincidence is something that happens while you take the medicine. Blood pressure is influenced by many things at once, and a rise in a reading during treatment does not prove the medicine caused it. Equally, a coincidence is still worth reporting, because your prescriber can weigh it up properly.

That does not make your experience unimportant. New symptoms should always be discussed with your prescriber, and reported via the Yellow Card scheme so regulators can assess them across many patients.¹⁹

Our guide to taking Mounjaro alongside high blood pressure adds practical context for people in that position, and the Mounjaro and blood pressure availability page covers ordering questions.

05 · How Mounjaro works

How Mounjaro works and why people ask

People ask about blood pressure because Mounjaro acts on hormone pathways involved in appetite, digestion and the body's response to insulin. Tirzepatide is the first treatment of its kind to activate two natural gut-hormone receptors at once: GIP and GLP-1.¹ Together these help regulate appetite, slow how quickly the stomach empties, and improve the way the body responds to insulin.

In practice, most people feel fuller sooner and less hungry between meals, which supports a reduced-calorie diet. That is the intended effect, and it is what the licence is built around. Mounjaro is a once-weekly injection in a pre-filled multi-dose pen, available in six strengths from 2.5mg to 15mg, and in the UK it is licensed for weight management in adults and for type 2 diabetes.¹

It is natural to wonder whether a medicine that acts on hormones could touch the cardiovascular system. Tell your prescriber about any new or lasting symptom.

Another practical point: tirzepatide has a half-life of about five days, so after a final dose it takes roughly 4–5 weeks to clear the system — there is no way to speed this up, and nothing needs doing while it clears.¹

To compare tirzepatide with single-action medicines, remember that the dual action is what distinguishes Mounjaro from semaglutide-based medicines such as Wegovy and Ozempic.¹

06 · Weight and health

Weight loss in the SURMOUNT-1 trial

The best-documented thing Mounjaro does is help people lose weight alongside diet and exercise, and that is the context in which any blood pressure discussion should sit. In the SURMOUNT-1 trial of 2,539 adults, people taking tirzepatide alongside diet and exercise lost on average 15% of their body weight on 5mg, 19.5% on 10mg and 20.9% on 15mg over 72 weeks, compared with 3.1% with lifestyle changes alone.²

These are trial averages, and individual results vary. Treatment works alongside a reduced-calorie diet and increased physical activity, not instead of them.² At 72 weeks, 85% of participants on 5mg, 89% on 10mg and 91% on 15mg had lost at least 5% of their body weight. Half of participants on 10mg and 57% on 15mg lost at least 20% of their body weight.²

For a worked example only: for someone starting at 100 kg, 20.9% is about 21 kg. Your own result will differ, and trial averages do not predict it.

Why mention this on a blood pressure page? Because it is easy to confuse two separate questions. One is whether the medicine itself affects blood pressure. The other is whether the broader changes during treatment, such as eating differently, moving more and losing weight, affect your health markers.

If you want to track your journey, GLPTrackr is our free companion app for iOS and Android. You can note your injection day, how you feel and any readings you take, then share them in your reviews. A record kept consistently is far more useful to a clinician than a memory of how things felt.

For the weight-management view of blood pressure in general, see weight loss drugs and high blood pressure.

07 · If you have hypertension

If you already have high blood pressure

Having high blood pressure does not automatically stop you being considered for Mounjaro, but it must be disclosed and discussed.

Before the consultation, gather the following so your answers are accurate:

• The names and strengths of any blood pressure medicines you take, as printed on the box.
• Your recent home or surgery readings, if you have them.
• Any other long-term conditions and every other medicine, including over-the-counter products.
• Any previous reaction to a medicine.

Be complete rather than brief. A prescriber can only judge suitability from what they are told, and if the prescriber decides the treatment is not suitable, the order is refunded automatically in full.

After starting, keep taking your usual medicines as directed by your own doctor. Do not stop or reduce a blood pressure tablet because you have started weight management treatment; any change to those medicines is a decision for the doctor who prescribes them. If you notice dizziness or light-headedness, tell your prescriber. If you faint or have chest pain or a racing heart, get medical help straight away.

It is sensible to keep monitoring your readings in whatever way your GP has advised. A regular, calm routine at similar times of day gives more meaningful numbers than occasional checks when you feel unwell. Share the log with your prescriber at monthly reviews.

The SmPC and leaflet specify when extra care is needed and which people should not use the medicine. Check them yourself, as well as answering our questionnaire honestly.¹¹³ Related reading: having Mounjaro with high blood pressure and, for the reverse question, whether Mounjaro can be prescribed for high blood pressure.

08 · Medicines to mention

Medicines to mention to your prescriber

Always tell your prescriber about every medicine you take, because combinations are where problems most often arise. That includes prescription medicines, over-the-counter products and supplements. The patient leaflet has a dedicated section on other medicines, and it is the source to check for a definitive answer.¹³

First, Mounjaro slows stomach emptying, which can reduce how well oral contraceptive pills are absorbed. The SmPC advises switching to a non-oral method, or adding a barrier method (such as condoms), for 4 weeks after starting Mounjaro and for 4 weeks after each dose increase.¹ Second, if you use insulin or sulfonylureas, doses may need adjusting because of the risk of low blood sugar. They are not simply forbidden alongside Mounjaro; they need a prescriber's oversight.¹

The right route is to name each tablet at consultation and let the prescriber check it against the SmPC. If a combination needs a change, the decision should be made by the clinician responsible for each medicine, not by you or by a website.

What should you avoid while taking Mounjaro? It is used alongside a reduced-calorie diet and increased physical activity, and it is supplied only after a prescriber review.¹ Beyond that, avoid obtaining it from sellers offering to supply without a consultation or prescription. Counterfeit and unregulated products are a recognised risk, and the MHRA publishes alerts about them.⁷ You can verify any pharmacy on the GPhC register; ours is registration 9012878.¹²

Who should not take Mounjaro? You should not take Mounjaro if you are allergic to tirzepatide or any of its ingredients, and it should not be used during pregnancy or while trying to conceive; it must be stopped at least one month before trying to conceive. Your prescriber will take extra care, or may recommend against treatment, if you have a history of pancreatitis, severe gut or digestive disease, diabetic retinopathy, or gallbladder problems. Always share your full medical history and medicine list during consultation. If you are unsure whether something applies to you, say so in the questionnaire rather than leaving it out.

Keep the habit of checking: every time a new medicine is prescribed by another clinician, mention that you use Mounjaro. Pharmacists are well placed to spot clashes, so a quick word at the counter is worthwhile.

09 · Symptoms and reporting

Symptoms, heart rate and reporting side effects

If you notice a new symptom after starting Mounjaro, report it, because reporting is how safety knowledge grows. Heart rate is a common follow-up question. If you feel your heart racing, pounding or behaving unusually, tell your prescriber, and get medical help straight away if it is severe or comes with chest pain, breathlessness or faintness.

The Yellow Card scheme run by the MHRA lets patients and professionals report suspected side effects directly.¹⁹ You do not need to be certain the medicine caused something to report it. Note the date, what you took, your dose and what happened.

What are the worst side effects of Mounjaro? The UK patient leaflet lists inflamed pancreas (acute pancreatitis, uncommon) — severe, persistent stomach pain, with or without being sick: stop using Mounjaro and get medical help straight away — and severe allergic reaction (rare) — breathing problems, rapid swelling of the lips, tongue or throat, or a fast heartbeat: get medical help straight away.¹³

Practical steps that help any review:

• Write down readings with date, time and whether you were rested.
• Note your injection day and current dose.
• Record other changes, such as new medicines, illness or poor sleep.
• Bring the log to your monthly review or send it through your account.

Our team can be reached Monday to Friday, 9am to 5pm, by email at support@everydaymeds.co.uk, through account portal chat or by phone on 0333 207 0413. For anything urgent outside those hours, use NHS 111 or emergency services.

Finally, keep the pen as directed. Store it in the fridge at 2–8°C and never freeze it; once in use, a pen can be kept out of the fridge at a temperature not above 30°C for up to 30 days after first use, and must then be thrown away.¹ Following the pen's instructions each week removes one avoidable source of worry.

10 · NHS or private

NHS or private: where do you get it?

Mounjaro is available on the NHS, but access is being phased in over several years. NICE recommends it for adults with a BMI of at least 35 plus at least one weight-related condition. The NHS primary-care rollout began in June 2025 with the highest-need groups first, initially BMI 40+ with four or more qualifying conditions.⁴⁶ Full rollout is expected to take years.

That matters for readers with high blood pressure, because high blood pressure is a common reason people are looking at weight management in the first place. Your GP knows your whole history and can tell you whether you are likely to qualify on the NHS and when. If you do not yet meet the criteria, or do not want to wait, regulated private treatment is the alternative many people choose.

Whichever route you take, the same principle applies: a clinician should review your medicines and conditions before you start, and again as you go. A private prescription is not a shortcut around that. Our prescribers review your questionnaire, and repeat orders re-check suitability.

A note on cost, because it comes up. The consultation is free, and the price shown is the price paid.

Payment options include Visa, Mastercard and Klarna, with pay-monthly options and no subscription lock-in. Supply is official LillyDirect supply, sourced directly from Eli Lilly's UK distribution, so you receive genuine KwikPens.

When you are ready, the Mounjaro pen and consultation page is where to begin. Ordering works in simple steps: complete the free online consultation, wait for the prescriber review, then receive dispensing and free next-day tracked delivery in temperature-controlled packaging. Orders placed by 3pm are dispatched the same day.

11 · Other medicines

Other weight-loss medicines and blood pressure

Other weight-management medicines raise the same question, and the answer is the same: read the product information for the specific medicine. Wegovy, which contains semaglutide, is a once-weekly injection with pens of 0.25mg, 0.5mg, 1mg, 1.7mg and 2.4mg; its dose steps up after at least four weeks and reaches the 2.4mg maintenance dose from week 17. Liraglutide products such as Saxenda are supplied at 6mg/ml and are a daily injection, unlike once-weekly Mounjaro and Wegovy.

For tablets in this class, our blog post Foundayo and blood pressure: what trials show sets out what is documented for that product.

If you are weighing options, three questions are better than any single headline. Is the medicine licensed for the use you need? What does its own product information say about your conditions and medicines? And who will review you after you start? A treatment with a clear answer to each is a safer choice than one chosen because of a number on a forum.

Be wary of products marketed with dramatic weight-loss claims, particularly low-cost supplements with no clinical oversight. They are available cheaply without assessment, and their dosing is not standardised. Being easy to buy is not the same as being safe or effective, and anyone with high blood pressure has even more reason to involve a clinician in what they take.

A person with high blood pressure who wants to lose weight has a few sensible routes: talk to the GP who manages the blood pressure, ask a pharmacist about interactions with current tablets, and consider a regulated, prescriber-led service if you want to use a medicine like Mounjaro. Our weight loss clinic is one such route.

None of this replaces advice from your own doctor. This page is information, not a substitute for medical advice, and Mounjaro is a prescription-only medicine supplied only after a consultation reviewed by a GPhC-registered prescriber. Individual results vary.

12 · Serious side effects

Serious side effects: when to get help straight away

Serious side effects are uncommon but need urgent attention. Seek immediate medical help for: severe, persistent stomach pain that may spread to your back, with or without vomiting (possible pancreatitis); pain in the upper right abdomen, fever or yellowing of skin/eyes (possible gallbladder problems); or signs of a severe allergic reaction such as swelling of the face or throat and difficulty breathing. If you take insulin or a sulfonylurea alongside Mounjaro, watch for low blood sugar (shakiness, sweating, confusion) — your prescriber may need to adjust those medicines.¹