In recent years, weight loss medication has become a prominent topic in the UK, reflecting a broader shift in how obesity and related health conditions are being addressed.

With increasing media coverage and evolving NHS guidelines, more people are exploring medical options alongside traditional lifestyle changes. This article will explore and identify recent developments in weight loss management, including eligibility criteria, available treatments, and considerations for workplace safety.

Who qualifies for NHS weight loss medication?

The NHS now offers prescribed weight loss medication to those who qualify,¹ based on criteria set by the National Institute of Health and Care Excellence (NICE).² These medications are intended to be used alongside a reduced-calorie diet and increased physical activity.

NICE-approved medications include Semaglutide (Ozempic, Wegovy) and Tirzepatide (known as Mounjaro in the UK). These can be prescribed as weight loss medication for adults with obesity or who are overweight and have weight-related comorbidities.

Medication Profiles and Workplace Considerations

There is a range of anti-obesity medicines available, proven to be safe and effective for use on the NHS for weight-management. These medicines are also available for patients to access privately.³

Mounjaro

Mounjaro is a weight loss injection that reduces appetite and slows down stomach emptying, making the person feel fuller for longer.

Side effects: Some people may notice mild digestive symptoms such as nausea, vomiting, diarrhoea, or constipation. These effects often lessen over time. In rare cases, more serious conditions like gallstones or pancreatitis may occur, so regular monitoring is advised.

Eligbility: NHS guidelines require a body mass index (BMI) of at least 35kg/m2, for eligibility, and an obesity-related health condition such as diabetes, high-blood pressure or heart disease.⁴

Ozempic (semaglutide)

Ozempic is a weekly injectable GLP‑1 receptor agonist originally developed for type 2 diabetes but increasingly used for weight loss. It works by reducing appetite and slowing digestion, which can help with calorie control.⁵

Side effects: Common side effects include nausea, vomiting, diarrhoea, constipation, and abdominal pain—usually when starting treatment or increasing the dose. Serious risks (though rare) include pancreatitis, gallbladder problems, kidney injury from dehydration, hypoglycaemia when combined with other diabetes medications, and a boxed warning for thyroid tumours based on animal studies.⁵

Eligbility: The NHS requires a diagnosis of type 2 diabetes plus additional help managing blood sugar levels. It is not prescribed for weight loss.⁶

Orlistat

Orlistat is a capsule medication that blocks the absorption of fat in the digestive system leading to excretion of undigested fat. Orlistat capsule is taken with water, before or up to one hour after a meal.

Side effects: Can cause gastrointestinal side effects like oily diarrhoea, urgent need to use the toilet and abdominal pain. To minimise side effects, a low-fat diet may help.⁷

Liraglutide

Liraglutide needs to be prescribed on the NHS by a specialist weight management service. It is a self-administered injection, once weekly or once daily depending on prescription.

Side effects: Administered via injection, this medication may cause mild nausea or digestive upset initially. In rare cases, gallbladder issues have been reported. Risk of acute gallbladder or biliary disease. When used under medical supervision, the benefits usually outweigh the risks.⁷

Occupational Health Considerations

Weight loss medications can impact alertness, digestion, and overall wellbeing, which is particularly relevant for safety-critical roles (e.g., drivers, machine operators). A multidisciplinary approach, including open and transparent communication between employee, employer and occupational health provider, is essential to workplace safety and weight loss drugs.

Weight loss medications can impact alertness, digestion, and overall wellbeing, which is particularly relevant for safety-critical roles. A multidisciplinary approach is essential to workplace safety and weight loss drugs.

Occupational Health Case Study

A recent example from our team highlights the importance of a thorough, multidisciplinary approach to weight loss medication in the workplace.

A candidate working in a safety-critical role — such as a train driver or crane operator — approached Abbott with concerns about how starting a new weight loss medication might interact with their existing prescriptions and impact their ability to perform their job safely. To ensure a comprehensive assessment, we collaborated with both our on-call pharmacist and an occupational health physician. Together, we conducted a detailed medication review to confirm there were no contraindications or risks that could affect the individual's fitness for duty. This proactive approach not only supported the employee’s health goals but also upheld safety standards in the workplace.

NHS Weight Management Support  

• NHS Digital Weight Management Programme – A free online support.
  (Link to www.england.nhs.uk)
• Lose Weight – Better Health App - NHS-endorsed app for lifestyle changes
  (link to www.nhs.uk)
• Local Weight Loss Groups – Available via NHS, local authorities, or commercial providers.
• General Practitioner (GP) - Advice and refer to local services and exercise programmes. Referral to a qualified trainer and supervised sessions.

Looking to the Future

As weight loss medications become more widely available and integrated into care pathways, it's essential that individuals, employers, and healthcare professionals stay informed and work together to ensure safe, effective, and personalised treatment decisions.