Mounjaro NHS Criteria & Side Effects UK | Cured Pharmacy

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Mounjaro NHS Criteria - Cheapest UK Price £124.99

Get Mounjaro at the cheapest UK price from £124.99 plus £20 off your first order with code Weightlossnew.

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£145.00 From £124.99 £10 discount using discount code Weightlossnew
LIVE PRICING

Our Pricing

Pricing Disclaimer: Prices on some pages may not be up to date — the live pricing table below and pricing shown during consultation are official current prices and take precedence over any other figures on the site.

Mounjaro (Tirzepatide)
Weeks 1–4

2.5mg

1 pen • 4 Weeks

£145 £124.99

£31.25 / Per Week

Your starting dose – designed to help your body adjust gently to treatment

⭐ Future Orders at £145
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Mounjaro (Tirzepatide)
Weeks 5–8

5mg

1 pen • 4 Weeks

£179 £159.00

£39.75 / Per Week

First step up – builds on your progress as your body adapts to treatment

⭐ Future Orders at £179
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Mounjaro (Tirzepatide)
Weeks 9–12

7.5mg

1 pen • 4 Weeks

£220 £200.00

£50.00 / Per Week

Mid-range dose – for continued progression and enhanced results

⭐ Future Orders at £220
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Mounjaro (Tirzepatide)
Weeks 13–16

10mg

1 pen • 4 Weeks

£245 £225.00

£56.25 / Per Week

Higher strength dose – supports significant weight loss progress

⭐ Future Orders at £245
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Mounjaro (Tirzepatide)
Weeks 17–20

12.5mg

1 pen • 4 Weeks

£270 £250.00

£62.50 / Per Week

Advanced dose – for patients requiring stronger therapeutic effect

⭐ Future Orders at £270
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Mounjaro (Tirzepatide)
Weeks 21+

15mg

1 pen • 4 Weeks

£287 £267.00

£66.75 / Per Week

Maximum dose – the highest available strength for optimal results

⭐ Future Orders at £287
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Wegovy (Semaglutide)
Weeks 1–4

0.25mg

1 pen • 4 Weeks

£89 £69.00

£17.25 / Per Week

Your starting dose – eases your body into treatment with minimal side effects

⭐ Future Orders at £89
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Wegovy (Semaglutide)
Weeks 5–8

0.5mg

1 pen • 4 Weeks

£99 £79.00

£19.75 / Per Week

First step up – continues building tolerance for long-term success

⭐ Future Orders at £99
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Wegovy (Semaglutide)
Weeks 9–12

1mg

1 pen • 4 Weeks

£119 £99.00

£24.75 / Per Week

Mid-range dose – where most patients start seeing meaningful results

⭐ Future Orders at £119
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Wegovy (Semaglutide)
Weeks 13–16

1.7mg

1 pen • 4 Weeks

£169 £149.00

£37.25 / Per Week

Higher strength – supports accelerated weight loss progress

⭐ Future Orders at £169
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Wegovy (Semaglutide)
Weeks 17+

2.4mg

1 pen • 4 Weeks

£199 £179.00

£44.75 / Per Week

Maximum dose – the highest available strength for optimal weight management

⭐ Future Orders at £199
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Mounjaro NHS Criteria Side Effects: What to Expect

Understanding mounjaro nhs criteria side effects uk is essential before starting tirzepatide treatment. At Cured Pharmacy, our UK-registered clinical team assesses your eligibility against established NHS criteria whilst providing comprehensive guidance on managing potential side effects throughout your weight loss journey.

NHS Criteria for Mounjaro Prescribing in the UK

The MHRA has licensed Mounjaro (tirzepatide) for weight management in adults with a body mass index (BMI) of 30 kg/m² or greater, or 27 kg/m² or greater in the presence of at least one weight-related comorbidity such as hypertension, type 2 diabetes, or dyslipidaemia [1]. These criteria align with NICE guidance for GLP-1 receptor agonist prescribing, ensuring treatment is targeted toward patients who will derive the greatest clinical benefit.

Beyond BMI thresholds, prescribers assess your medical history for contraindications including personal or family history of medullary thyroid carcinoma, multiple endocrine neoplasia syndrome type 2, severe gastrointestinal disease, or diabetic retinopathy requiring active treatment [1]. Our superintendent pharmacist Tarun Kumar (GPhC 2233073) ensures every clinical assessment follows current MHRA and NICE guidance before dispensing Mounjaro from our UK-registered pharmacy.

The NHS has implemented tiered prescribing criteria that prioritise patients with the highest clinical need. Whilst private prescriptions through registered UK pharmacies like Cured Pharmacy follow the same safety criteria, they offer faster access for eligible patients who meet the clinical thresholds but face extended NHS waiting times.

Common Side Effects of Mounjaro: What Clinical Trials Show

In the SURMOUNT-1 trial involving 2,539 participants, gastrointestinal side effects were the most frequently reported reactions during tirzepatide treatment [2]. Nausea occurred in 29-33% of patients depending on dose, diarrhoea in 21-23%, vomiting in 10-13%, and constipation in 17-19% [2]. These effects typically emerged during dose escalation and diminished in severity over subsequent weeks as the body adapted to the medication.

The majority of gastrointestinal reactions were classified as mild to moderate in severity, with less than 7% of participants discontinuing treatment due to adverse events [2]. This compares favourably to semaglutide-based treatments, where discontinuation rates due to side effects ranged from 7-9% in the STEP trials [3].

Beyond gastrointestinal effects, clinical trials documented fatigue (11%), injection site reactions (6%), and headache (8%) as secondary side effects [2]. Hypoglycaemia occurred rarely in patients without diabetes (0.6%), but increased to 8-10% in those taking concurrent diabetes medications, highlighting the importance of prescriber review of your complete medication list during consultation.

Managing Gastrointestinal Side Effects Effectively

Our clinical team recommends eating smaller, more frequent meals during the first 4-8 weeks of treatment to minimise nausea and early satiety. Avoiding high-fat foods, staying well-hydrated with at least 2 litres of water daily, and timing your injection in the evening can reduce daytime gastrointestinal discomfort. If nausea persists beyond the dose escalation period, your prescriber may adjust your titration schedule to allow additional adaptation time at each dose level.

Serious Side Effects: Recognition and When to Seek Help

Whilst rare, serious adverse reactions require immediate medical attention. Acute pancreatitis occurred in 0.2% of tirzepatide-treated patients in clinical trials, presenting as severe persistent abdominal pain radiating to the back, often accompanied by nausea and vomiting [2]. If you experience these symptoms, discontinue Mounjaro immediately and contact NHS 111 or attend A&E.

Gallbladder disorders including cholelithiasis and cholecystitis occurred in 1.5-2.5% of participants during the SURMOUNT trials, particularly in those experiencing rapid weight loss [2]. Symptoms include sudden right upper quadrant abdominal pain, fever, and jaundice. Your prescriber will discuss these risks during your clinical assessment, especially if you have a history of gallstones.

Allergic reactions ranging from mild rash to anaphylaxis have been documented, though severe cases remain extremely rare (less than 0.1% in clinical trials) [1]. Signs of serious allergic reaction include difficulty breathing, facial swelling, rapid heartbeat, or widespread rash. These symptoms constitute a medical emergency requiring immediate NHS care.

Treatment Most Common Side Effects NHS BMI Criteria Starting Price
Mounjaro (tirzepatide) Nausea (29-33%), diarrhoea (21-23%), constipation (17-19%) ≥30 kg/m² or ≥27 kg/m² with comorbidity From £124.99
Wegovy (semaglutide) Nausea (44%), diarrhoea (30%), vomiting (24%) ≥30 kg/m² or ≥27 kg/m² with comorbidity From £69.00
Saxenda (liraglutide) Nausea (39%), diarrhoea (21%), constipation (20%) ≥30 kg/m² or ≥27 kg/m² with comorbidity From £68.00
Orlistat Oily stools (27%), faecal urgency (22%), flatulence (24%) ≥30 kg/m² or ≥28 kg/m² with risk factors From £32.00

Mounjaro NHS Criteria Side Effects Compared to Alternative Treatments

When comparing tirzepatide's side effect profile to other UK-licensed weight loss medications, the dual GIP/GLP-1 mechanism produces distinct clinical characteristics. Semaglutide (Wegovy) shares similar gastrointestinal side effects, with nausea rates of 44% and diarrhoea rates of 30% in the STEP-1 trial [3]. Liraglutide (Saxenda) demonstrated comparable patterns, though with higher injection frequency increasing cumulative injection site reactions.

Orlistat-based treatments like Xenical produce fundamentally different side effects centred on fat malabsorption—oily stools, faecal urgency, and flatulence—affecting up to 27% of users [4]. These gastrointestinal effects persist throughout treatment rather than diminishing after an adaptation period, representing a key distinction from GLP-1 receptor agonists.

The NHS eligibility criteria remain consistent across injectable weight loss medications, though prescribing patterns may vary based on individual tolerance, preference for injection frequency, and cost considerations. At Cured Pharmacy, Mounjaro is available from £124.99, with pricing transparency provided before your clinical consultation begins.

Choosing Between Mounjaro, Wegovy, and Saxenda

Your UK prescriber will consider multiple factors when recommending the most appropriate treatment, including your weight loss goals, previous medication tolerance, injection preference (weekly versus daily), and any contraindications specific to each medication class. Clinical trial data suggests tirzepatide achieves superior weight reduction outcomes—averaging 20.9% body weight loss at the 15mg dose compared to 14.9% with semaglutide 2.4mg over comparable timeframes [2][3].

Long-Term Safety Data and Ongoing Monitoring Requirements

The SURMOUNT clinical programme followed participants for up to 72 weeks, establishing a robust safety profile for tirzepatide in weight management [2]. Cardiovascular safety analyses demonstrated no increased risk of major adverse cardiovascular events, with ongoing studies (SURMOUNT-MMO) investigating potential cardiovascular benefits similar to those documented with semaglutide in the SELECT trial.

Regular monitoring during Mounjaro treatment includes baseline and periodic assessment of renal function, particularly in patients experiencing significant gastrointestinal side effects that may lead to dehydration. Your prescriber may request blood tests at 3-6 month intervals to monitor kidney function, liver enzymes, and lipid profiles as weight loss progresses.

Thyroid monitoring remains controversial, as the theoretical risk of thyroid C-cell tumours observed in rodent studies has not materialised in human clinical trials or post-marketing surveillance data [1]. However, patients with a family history of medullary thyroid carcinoma remain excluded from treatment as a precautionary measure based on MHRA licensing conditions.

Starting Mounjaro Treatment at Cured Pharmacy

Beginning treatment requires completion of our free online clinical assessment, which takes under 3 minutes and is reviewed by a UK-registered prescriber within 24 hours on working days. The assessment covers your medical history, current medications, previous weight loss attempts, and screens for contraindications against NHS prescribing criteria.

If approved, your first prescription typically begins at the 2.5mg dose for 4 weeks, escalating to 5mg, then 7.5mg, 10mg, 12.5mg, and finally 15mg at monthly intervals as tolerated [1]. This gradual titration schedule minimises gastrointestinal side effects whilst allowing your body to adapt to increasing doses. Your prescriber may adjust this schedule based on your individual tolerance and response.

All Mounjaro KwikPens are dispensed in 100% discreet packaging with next-day delivery options available across the UK. Our clinical team remains available throughout your treatment journey to address questions about side effects, dose adjustments, or any concerns that arise. As a GPhC-registered pharmacy (9012511), we dispense only genuine UK-licensed Mounjaro manufactured by Eli Lilly, with full traceability and regulatory compliance guaranteed.

What to Expect During Your First Month

Most patients notice reduced appetite within 3-5 days of their first injection, with mild nausea being the most common initial side effect. Weight loss typically becomes measurable after 2-3 weeks, averaging 2-3% of body weight during the first month at starter doses [2]. Keeping a simple symptom diary during your first 8 weeks helps identify patterns and triggers, enabling more effective side effect management strategies.

Scientific References

  1. Medicines and Healthcare products Regulatory Agency. (2023). Mounjaro 2.5 mg solution for injection in pre-filled pen: Summary of Product Characteristics. MHRA. https://products.mhra.gov.uk/
  2. Jastreboff, A. M., et al. (2022). Tirzepatide Once Weekly for the Treatment of Obesity. New England Journal of Medicine, 387(3), 205–216. https://doi.org/10.1056/NEJMoa2206038
  3. Wilding, J. P. H., et al. (2021). Once-Weekly Semaglutide in Adults with Overweight or Obesity. New England Journal of Medicine, 384(11), 989–1002. https://doi.org/10.1056/NEJMoa2032183
  4. Torgerson, J. S., et al. (2004). XENical in the prevention of diabetes in obese subjects (XENDOS) study: a randomized study of orlistat as an adjunct to lifestyle changes for the prevention of type 2 diabetes in obese patients. Diabetes Care, 27(1), 155–161. https://doi.org/10.2337/diacare.27.1.155

Information on this page is for educational purposes only and is not medical advice. All prescription treatments require clinical assessment by a UK-registered prescriber. Always consult a qualified healthcare professional before starting any new medication.

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Faq

What are the most common Mounjaro side effects in UK patients?
Nausea (29-33%), diarrhoea (21-23%), and constipation (17-19%) are the most frequently reported side effects, typically occurring during dose escalation and diminishing over 4-8 weeks as your body adapts to treatment.
Do I meet the NHS criteria for Mounjaro if my BMI is 28?
You may qualify if you have a BMI of 27 kg/m² or greater alongside at least one weight-related comorbidity such as type 2 diabetes, hypertension, or dyslipidaemia. Our UK prescribers assess your complete medical history during the free online consultation.
How long do Mounjaro side effects typically last?
Most gastrointestinal side effects peak during the first 2-3 weeks after each dose increase and gradually diminish over 4-8 weeks. Persistent symptoms beyond this timeframe should be discussed with your prescriber, who may adjust your titration schedule.
Can I take Mounjaro if I have a history of pancreatitis?
Previous acute pancreatitis is generally considered a contraindication to GLP-1 receptor agonist therapy due to the small but documented risk of recurrence (0.2% in clinical trials). Your UK prescriber will review your complete medical history before making a prescribing decision.
What's the difference between NHS Mounjaro criteria and private prescription criteria?
The clinical eligibility criteria remain identical—BMI thresholds and contraindication screening follow the same MHRA licensing conditions. Private prescriptions through UK-registered pharmacies like Cured Pharmacy offer faster access for eligible patients outside NHS waiting lists.
Are Mounjaro side effects worse than Wegovy side effects?
Clinical trials show tirzepatide produces slightly lower rates of nausea (29-33% versus 44%) and diarrhoea (21-23% versus 30%) compared to semaglutide, with fewer treatment discontinuations due to adverse events (under 7% versus 7-9%).
Do I need blood tests before starting Mounjaro in the UK?
Baseline blood tests aren't universally required but are recommended for patients with existing kidney disease, diabetes, or other metabolic conditions. Your prescriber will determine necessary monitoring based on your individual medical history during clinical assessment.
What should I do if I experience severe abdominal pain on Mounjaro?
Severe persistent abdominal pain, especially if radiating to your back with nausea and vomiting, may indicate pancreatitis. Discontinue Mounjaro immediately and seek urgent medical attention through NHS 111 or your nearest A&E department.
Does Mounjaro meet NHS criteria for weight loss in the UK?
Mounjaro is approved in the UK for weight management in adults with a BMI of 30 or above, or 27 with weight-related health conditions. Cured Pharmacy ensures all prescriptions meet NHS and MHRA clinical criteria through a UK-registered prescriber assessment before dispensing.
What are the most common Mounjaro side effects in UK users?
Common Mounjaro side effects include nausea, diarrhoea, vomiting, constipation, and reduced appetite, typically mild and temporary. Cured Pharmacy provides full side effect guidance with every prescription and our clinical team is available for support throughout your treatment.
Can I switch to Mounjaro if I'm currently on another weight loss treatment?
Yes, many patients switch to Mounjaro from other treatments under clinical guidance. Cured Pharmacy's prescribers will review your current medication during consultation to ensure a safe transition and appropriate dosing schedule for your individual needs.
How does Mounjaro price at Cured Pharmacy compare to high street pharmacies?
Cured Pharmacy offers Mounjaro from £124.99, often cheaper than high street pharmacies due to our online model. Plus, you save an additional £20 on your first order with code Weightlossnew, making it the most affordable option in the UK market.
Is Mounjaro available for next day delivery in the UK?
Yes, Mounjaro is available for next day delivery across the UK when you order before our cut-off time. Cured Pharmacy dispatches from our registered pharmacy with discreet packaging and full tracking for your convenience and peace of mind.
Tarun Kumar, Prescribing Pharmacist

Medically reviewed by

Tarun Kumar, Prescribing Pharmacist (GPhC 2233073)

Last reviewed: 17 July 2026