Weight-loss medications and arthritis

Weight-loss medications: common questions

What are weight-loss medications?

Weight-loss medications are prescription medicines that can help people lose weight by reducing appetite and helping them feel fuller for longer. Some are injections and are known by brand names such as Mounjaro or Wegovy.

Why are people with arthritis asking about weight-loss medication?

People living with arthritis and other musculoskeletal (MSK) conditions often ask about weight-loss medication because body weight can affect joint pain, movement and overall physical comfort. Others are interested for broader health reasons or because weight is sometimes discussed when planning treatment or surgery.

Does having arthritis make someone eligible for weight-loss medication on the NHS?

No. Having arthritis or another MSK condition on its own does not make someone eligible for weight-loss medication on the NHS.
Access can vary depending on where you live, local NHS services and whether treatment is provided through the NHS or privately.

Do weight-loss medications affect arthritis?

Research into weight-loss medications is still developing. At the moment, there’s limited evidence about how these medicines affect arthritis and other MSK conditions specifically.

There is currently limited research on how these medicines affect people who are also taking treatments for arthritis, such as disease-modifying medicines or biologic medicines used to treat arthritis.

Is it safe to use weight-loss medication if you have arthritis?

Weight-loss medications aren’t suitable for everyone. Arthritis UK recommends that anyone using, or thinking about using, these medicines does so with the support of a healthcare professional who understands their medical history.

They shouldn’t be taken without medical advice.

Who might weight-loss medication not be suitable for?

Weight-loss medication may not be recommended if you have certain health conditions. This can include some stomach or digestive conditions, a history of eating disorders or some hormone-related conditions.

These medicines aren’t usually recommended if you’re pregnant, planning a pregnancy, breastfeeding or have recently given birth. A healthcare professional can help you decide whether treatment is appropriate for you.

What side effects can weight-loss medications cause?

Some people experience side effects such as nausea, vomiting, diarrhoea, constipation or fatigue. In some cases, more serious side effects can occur.

Some people may also lose muscle as well as body weight. Because of this, healthcare professionals usually recommend eating a balanced diet and doing gentle strength-building activity alongside treatment.

Should weight-loss medication be used on its own?

No. Weight-loss medication should only be used under clinical supervision as part of personalised care.

This care should also include support with lifestyle approaches, such as eating well and staying physically active in ways that protect your joints.

Is follow-up needed after stopping weight-loss medication?

Yes. NICE guidance recommends that people using weight-loss medication are monitored by a healthcare professional during treatment and after treatment stops.

This is important because many people regain weight once treatment ends, and ongoing support can help with longer-term health and wellbeing. Arthritis UK encourages anyone taking these medicines, whether privately or through the NHS, to stay in touch with their healthcare team while using them and after treatment stops.

Where can I find further support?

You may find Arthritis UK’s resources helpful. They offer practical, evidence-based advice to support joint health and overall wellbeing.
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•    Exercising with arthritis