New Weight-Loss Pill (Orforglipron) Expected in the UK by 2026

Eli Lilly and Company World Headquarters

The landscape of medical weight loss is about to change again. Eli Lilly, the pharmaceutical company behind the highly successful Mounjaro (tirzepatide), has announced that its new once-daily oral medication — Orforglipron — could reach the UK as early as 2026, pending regulatory approval.

For millions of people who struggle with obesity but dislike the idea of weekly injections, this breakthrough could make treatment more accessible, convenient, and effective.

What is Orforglipron?

Orforglipron is part of a class of medicines called GLP-1 receptor agonists, a group already proven effective in medications such as Mounjaro, Wegovy, and Ozempic.

Unlike existing injectable versions, Orforglipron comes as a simple daily tablet. This could appeal to those who are needle-averse or prefer the practicality of oral medication while travelling.

The drug works by mimicking a natural hormone (GLP-1) that regulates appetite, digestion, and blood sugar. As a result, patients tend to feel fuller for longer, experience fewer cravings, and eat smaller portions without feeling deprived.

Clinical Trial Results

Eli Lilly has recently reported strong findings from its Phase 3 ATTAIN trials:

  • Average weight loss: 10–15% of starting body weight.
  • High-dose results: Up to 12.4% weight loss over 72 weeks (roughly two stone for someone weighing 16 stone).
  • Health benefits: Improved cholesterol, lower blood pressure, and reduced inflammation.
  • Tolerability: Side effects such as nausea, diarrhoea, or constipation were generally temporary and improved with time.

Crucially, results with Orforglipron were found to be comparable to Mounjaro injections — without the need for needles.

How Does Orforglipron Compare to Other Options?

  • Orforglipron Vs Mounjaro – Mounjaro may deliver higher average weight loss (around 20%), but requires weekly injections. Orforglipron offers daily tablets for easier adherence.
  • Orforglipron Vs Wegovy / Ozempic – Injectable semaglutides average 15–17% weight loss. Orforglipron’s oral format could make treatment more accessible for those unable to self-inject.
  • Orforglipron Vs Rybelsus – Rybelsus (oral semaglutide) must be taken under strict fasting rules. Orforglipron is expected to be more flexible, with or without food.
  • Orforglipron Vs Orlistat & Mysimba – Older oral medications typically produce more modest results (5–10%) with more side effects. Orforglipron represents a step-change in efficacy for tablets.

When Will Orforglipron Be Available in the UK?

Eli Lilly is aiming to submit Orforglipron for regulatory approval in 2025. If approved, it could launch in the UK by 2026 — and the UK is expected to be one of the first countries to gain access.

Like other GLP-1 medications, it will likely be available privately first, with NHS rollout dependent on NICE guidance.

Pricing hasn’t yet been confirmed, but based on existing GLP-1 treatments, private prescriptions may cost between £100–£300 per month.

Who Could Benefit?

Orforglipron is expected to be prescribed for adults with:

  • BMI of 30+ (obesity)
  • BMI of 27+ with weight-related health conditions (e.g. type 2 diabetes, sleep apnoea, hypertension, fatty liver disease, PCOS)

Its oral format could particularly benefit those who:

  • Prefer tablets over injections
  • Travel frequently and find injections inconvenient
  • Have struggled with injectable medications in the past

Side Effects and Safety

As with all GLP-1 medications, the most common side effects are gastrointestinal and include:

  • Nausea
  • Vomiting
  • Diarrhoea or constipation
  • Stomach discomfort
  • Fatigue

These usually improve after the first few weeks as the body adjusts. Prescribers will typically use a titration schedule, starting with a lower dose and gradually increasing to minimise side effects.

The Future of Obesity Treatment

Eli Lilly executives have suggested that Orforglipron could be a $100 billion global market by 2030. Beyond weight management, trials are already underway to explore its potential for obstructive sleep apnoea and high blood pressure in people with obesity.

Looking even further ahead, researchers are exploring the possibility of a “once-and-done” obesity treatment — a single injection that could permanently reset the body’s weight regulation.

Key Takeaway

The arrival of Orforglipron in 2026 could mark a turning point in weight-loss treatment. For the first time, patients may have access to a clinically effective, easy-to-take daily pill instead of injections — broadening access and reducing barriers to obesity care.

At Private Medical Clinic, we closely monitor these medical advances to offer our patients the most effective, evidence-based options.

If you’re interested in exploring current weight-loss treatments such as Mounjaro or Wegovy, or want to be kept informed about the arrival of Orforglipron, our experienced private GPs are here to help.

Same Day Online Booking

Book your consultation online with our easy online booking form.

No Time Limits Appointments

Confidential same-day GP consultations with no time limits. Discuss your health concerns with an experienced doctor in a private and relaxing space.

Online Consultations Available

Same-day GP telephone or video consultations provide instant access to doctors. Prescriptions, medical certificates, referral letters & sick notes are available.

Dr Simon Khela

Dr. Simon Khela (MBChB, MRCGP) is Medical Director at Private Medical Clinic and an experienced Private GP with a special interest in Sport, Exercise, and Functional Medicine. He is passionate about preventative, personalised care and advancing healthcare through digital innovation and cutting-edge therapies.

Ready to take the next step?

Whether you're seeking advice or ready to book a consultation, we’re here to help. Explore our services or connect with a care professional today.

Latest blog posts

Ibuprofen tablets
News

NHS Warning Issued to Anyone Taking Naproxen and Aspirin Alongside Ibuprofen

The NHS has issued an important warning for people who use common painkillers, advising the public not to mix ibuprofen with other nonsteroidal anti-inflammatory drugs (NSAIDs) such as naproxen or aspirin.
School closures as NHS pressures grow
News

FLU-NAMI: Mutated ‘Superflu’ Strain Forces School Closures as NHS Pressures Grow

A newly emerging strain of influenza, widely referred to as the “superflu”, is rapidly spreading across the UK and causing significant disruption to schools, families, communities, and healthcare services.
Doctor talking to senior patient at home
Private GP

Your Guide to GP Home Visits in Sutton Coldfield

If you're feeling unwell but the thought of getting to a clinic fills you with dread, you're not alone.
Small red itchy bumps on the skin caused by scabies
Health

Scabies: Causes, Symptoms, Treatment & How to Prevent the Spread

Scabies is a highly contagious skin condition caused by the microscopic Sarcoptes scabiei mite. These mites burrow into the skin, leading to intense itching, irritation, and a distinctive rash.
Elderly couple shopping
News

Christmas Shopping May Expose These Two Hidden Dementia Signs, Doctors Caution

Families are being urged to stay alert during festive shopping trips this year, as specialists highlight two early dementia warning signs that often become more noticeable in crowded, fast-paced environments.
Vitamin D rich foods
Nutrition

The Health Benefits of Vitamin D Injections – A Complete Guide

Vitamin D is a crucial nutrient that plays a pivotal role in maintaining long-term health and overall wellbeing. From supporting a strong immune system to strengthening bones and improving mood.