Chelsea Green Pharmacy
At Chelsea Green Pharmacy, we understand that weight loss can be a challenging and deeply personal journey. For many people, lifestyle changes alone may not be enough to achieve or maintain a healthy weight, especially when other health conditions like type 2 diabetes or polycystic ovary syndrome (PCOS) are involved. That’s where medical interventions such as weight loss injections can make a meaningful difference.
If you’ve been wondering what is the best injection for weight loss, this guide will walk you through the leading options currently available in the UK, how they work, and who they may be suitable for.
Why Consider Weight Loss Injections?
Weight loss injections are prescription medications designed to help regulate appetite and improve metabolic function, assisting individuals with long-term weight management.
These injections are generally prescribed to people with a BMI of 30 or above, or those with a BMI of 27 and weight-related health issues, such as hypertension or type 2 diabetes. They are often recommended for individuals who have tried to lose weight through lifestyle changes without success.
1. Wegovy (Semaglutide)
Wegovy is one of the most widely discussed weight loss injections in the UK and has gained popularity due to its impressive results in clinical trials.
How it works: Wegovy contains semaglutide, a GLP-1 receptor agonist. It mimics the natural hormone GLP-1, which regulates appetite and food intake. By slowing down gastric emptying and signalling fullness to the brain, it helps reduce hunger and overall calorie intake.
Administration: It is taken once a week as a subcutaneous injection (just under the skin), usually in the abdomen or thigh.
Effectiveness: In trials, patients lost on average 15% of their body weight over 68 weeks when combined with a calorie-controlled diet and increased physical activity.
Suitability: Ideal for adults with obesity or those who are overweight with a medical need for weight reduction.
Wegovy is currently available via the NHS for certain eligible patients and is also offered privately at clinics and pharmacies, including through Chelsea Green Pharmacy’s weight loss service.
2. Saxenda (Liraglutide)
Saxenda was the first GLP-1 weight loss injection approved in the UK and remains a popular option.
How it works: Like Wegovy, Saxenda contains a GLP-1 receptor agonist—liraglutide. It reduces appetite and promotes a feeling of fullness, leading to lower food consumption.
Administration: Saxenda is administered once daily via injection. The dose is gradually increased over the first few weeks to reduce the risk of side effects.
Effectiveness: Clinical studies show that people using Saxenda can lose up to 5–10% of their body weight when combined with healthy lifestyle changes.
Suitability: Recommended for adults with a BMI ≥30, or ≥27 with a weight-related health condition. It can also be prescribed for adolescents aged 12–17 with obesity.
Saxenda is generally well tolerated and can be an excellent alternative if Wegovy is unavailable or unsuitable.
3. Mounjaro (Tirzepatide)
Already approved for type 2 diabetes management, it has shown remarkable promise since being approved for weight loss in the UK.
How it works: Mounjaro contains tirzepatide, a dual GIP and GLP-1 receptor agonist. This dual-action approach appears to have even more powerful effects on blood sugar regulation and appetite suppression than GLP-1 alone.
Administration: Weekly subcutaneous injection, similar to Wegovy.
Effectiveness: Some studies have shown average weight loss of 20% or more, which may surpass current medications.
Suitability: Pending regulatory approval, but expected to be an option for people with obesity and related conditions.
Are Weight Loss Injections Right for You?
Choosing the best injection for weight loss depends on your health profile, goals, and personal preferences. Key factors to consider include:
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Your BMI and medical history
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Any current medications or conditions (especially diabetes)
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Preferred dosing schedule (daily vs. weekly)
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Side effect tolerance
Common side effects of these injections may include nausea, vomiting, constipation, or diarrhoea—usually temporary and dose-dependent. Serious side effects are rare but will be discussed during your consultation.
Support Beyond the Injection
At Chelsea Green Pharmacy, we take a holistic approach to weight management. Our weight loss injection programmes include:
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One-to-one consultations
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Full health assessments
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Lifestyle guidance (diet, exercise, mindset)
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Ongoing check-ins and support
We believe that successful weight loss comes from combining medical support with sustainable lifestyle habits.
Book a Consultation Today
If you’re ready to explore medically-supported weight loss options and have been searching for what is the best injection for weight loss, we’re here to help.
Contact Chelsea Green Pharmacy today to schedule a consultation and take the first step towards a healthier, more confident you.
