Can You Take Mounjaro If You Have a Heart Condition? (October 2026)

01 · The core answer

Can you take Mounjaro with heart problems?

Whether you can take Mounjaro with heart problems is a clinical judgement for a prescriber who has your full history.

Mounjaro is the brand name for tirzepatide, a once-weekly injectable prescription medicine made by Eli Lilly. In the UK it is licensed for weight management in adults and for type 2 diabetes.¹ It is used alongside a reduced-calorie diet and increased physical activity.

02 · Your next step

What to do if you have a heart condition

Start with the people who already know your heart. If you see a cardiologist, a heart failure nurse or a GP about your condition, ask them directly whether tirzepatide is suitable for you. Take your diagnosis, your latest results and your medicine list to that conversation.

If you then want to go ahead privately, our Mounjaro pen consultation is free. A GPhC-registered prescriber reviews your answers, not a scoring script, and unsuitable orders are refunded automatically. For the wider picture, see our weight loss clinic overview.

You can also read our related guides on heart conditions and tirzepatide and on heart failure and Mounjaro.

Related guide: Can you take mounjaro if you have endometriosis.

03 · Why it is personal

Why the answer is personal

For Mounjaro, the SmPC and the patient information leaflet set out who can and cannot take it, and they are the first thing to read.¹¹³ Our prescribers apply them to your history, not to a general category such as "heart problems".

Heart conditions differ widely. A past heart attack, a rhythm problem, heart failure, high blood pressure and a recent procedure are very different situations. Each can mean a different level of caution, and your other medicines matter too.

04 · What to tell us

What to tell your prescriber

Give the full picture in your consultation.

• Every heart diagnosis you have been given, and when.
• Any heart attack, stent, bypass, pacemaker or other procedure.
• Symptoms such as palpitations, breathlessness, chest pain or swelling — get medical help straight away for chest pain, a racing heart or difficulty breathing.
• All current medicines, including blood pressure tablets, blood thinners and diabetes treatments.
• Any other conditions, such as a history of pancreatitis.

If you have a long-term condition affecting another body system, such as multiple sclerosis, say so as well. It all feeds into the same safety review.

05 · Weight and heart health

Weight loss and heart health

Many people with heart conditions are also told to lose weight, and that is a reasonable reason to ask about treatment. It does not change the need for individual review. 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. The trial figures describe weight loss, not what happens in any particular heart condition.

06 · NHS or private

NHS or private route

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, and the primary-care rollout began in June 2025 with the highest-need groups first.⁴⁶

Full rollout is expected to take years, which is why some people who meet the licensed criteria choose regulated private treatment. If you do, the same safety questions apply.

07 · If symptoms change

If you notice new symptoms

Get medical help straight away for chest pain, a racing heart or fainting. Tell your prescriber or GP about any other new or worsening symptom.

You can also report a suspected side effect through the MHRA Yellow Card scheme.¹⁹ If you stop treatment, tirzepatide takes about four to five weeks to clear the system, and nothing needs doing while it clears.¹

08 · 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