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Wegovy 0.5mg weight loss injection
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Wegovy 0.5mg weight loss injection is a prescription-only medicine designed to help adults lose weight and maintain weight loss. It contains semaglutide and is used once a week, in conjunction with a healthy diet and increased physical activity [1].
Product description: Wegovy 0.5mg weight loss injection
Wegovy 0.5mg weight loss injection is a prescription medicine. It used to support weight loss in adults who are overweight or living with obesity. It contains semaglutide, a medication that mimics the natural hormone in your body to help regulate appetite and food intake.
Administer the Wegovy 0.5m injection once a week using a pre-filled pen that is easy to use.
This medicine is intended for people with a BMI of 30 or above. It is also can be used for people with a BMI of 27 or above who also have weight-related health problems like high blood pressure, type 2 diabetes, or high cholesterol. Wegovy is not a magic fix; it’s designed to work best when used in conjunction with healthy eating and regular exercise. Many people find that the semaglutide weight loss injection helps them feel less hungry and more in control of their eating habits [1].
Key benefits of Wegovy 0.5mg weight loss injection include:
Once-weekly dosing with a discreet, pre-filled pen
Gradual dose escalation to reduce side effects
Clinically proven to help with sustained weight loss
Suitable for use alongside other weight-related health treatments
Thinking about starting Wegovy 0.5mg weight loss injection? Here’s what you need to know about how it works, who it’s for, how to use it, side effects, and what makes it one of the UK’s most popular weight loss treatments.
Five key takeaways
Wegovy 0.5mg weight loss injection is a once-weekly prescription medicine designed to help adults lose weight and keep it off when combined with healthy lifestyle changes [1].
The active ingredient, semaglutide, mimics your body’s natural appetite-control hormone to help you feel fuller for longer and curb cravings [3].
Wegovy is most effective when used alongside a calorie-controlled diet and increased physical activity [2].
The 0.5mg dose is typically used as the second step in a gradual dose-escalation plan to minimise side effects [1].
Clinical studies show Wegovy can lead to significant, sustained weight loss for many patients [2].
Overview: Wegovy 0.5mg weight loss injection
Wegovy 0.5mg weight loss injection is part of a new generation of weight loss treatments that have revolutionised the management of obesity in the UK. Unlike older medicines, Wegovy uses a hormone-based approach to help you feel full and satisfied, so you’re less likely to overeat.
The 0.5mg dose is a key step in the gradual dose-escalation process, allowing your body to adjust and minimising the risk of unwanted side effects. Most people spend at least four weeks at this dose before moving up to the next strength, but your healthcare provider will personalise your plan [1].
Clinical trials have shown that people using Wegovy 0.5mg weight loss injection, along with healthy eating and exercise, can achieve significant and long-lasting weight loss. Many people also report improvements in weight-related health issues, such as blood pressure and cholesterol [2].
Active ingredient: Wegovy 0.5mg weight loss injection
The active ingredient in Wegovy 0.5mg weight loss injection is semaglutide. This GLP-1 receptor agonist works by mimicking the effects of a natural hormone to help control appetite and food intake [3].
What is Wegovy 0.5mg for weight loss injection?
Wegovy 0.5mg weight loss injection is used to help adults lose weight and maintain weight loss. It’s prescribed for people with obesity (BMI ?30) or those who are overweight (BMI ?27) with at least one weight-related health condition, such as high blood pressure or type 2 diabetes [2].
The goal is to support long-term, sustainable weight loss, rather than achieving rapid results. Wegovy is most effective when used in conjunction with a calorie-controlled diet and increased physical activity [2].
How does Wegovy 0.5mg weight loss injection work?
Wegovy 0.5mg weight loss injection contains semaglutide, which acts like the hormone GLP-1 in your body. GLP-1 is released naturally after you eat and signals your brain that you’re full. By mimicking this hormone, semaglutide helps you feel satisfied with less food, making it easier to stick to a healthy eating plan [1].
Semaglutide not only reduces hunger but also slows the rate at which food leaves your stomach. This means you feel fuller for longer, which can help prevent snacking and overeating between meals [3].
In addition to appetite control, Wegovy 0.5mg weight loss injection can help reduce cravings for high-calorie foods, making it easier to make healthy choices and maintain your progress [2].
How to use Wegovy 0.5mg weight loss injection
Wegovy 0.5mg weight loss injection comes in a pre-filled FlexTouch pen, which is easy to use at home. Inject yourself once a week, on the same day each week, into the fatty tissue just under the skin of your abdomen, thigh, or upper arm [1].
It’s important to rotate your injection sites each time to avoid irritation. For example, you might use your abdomen one week, your thigh the next, and your upper arm the week after.
If you miss a dose, take it as soon as you remember, as long as it’s within five days of your scheduled dose. If more than five days have passed, skip the missed dose and take your next injection on your usual day. Don’t double up to make up for a missed dose [1].
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Warnings and precautions: Wegovy 0.5mg weight loss injection
Before starting Wegovy 0.5mg weight loss injection, tell your healthcare team if you have a history of thyroid cancer, pancreatitis, or gallbladder problems. Wegovy is not suitable for people with certain rare genetic conditions, such as Multiple Endocrine Neoplasia syndrome type 2 [1].
Wegovy should not be used during pregnancy or while breastfeeding. If you are planning a pregnancy, you should stop using Wegovy at least two months before trying to conceive [1].
Let your healthcare provider know about all other medicines you’re taking, as Wegovy can interact with some diabetes medications and other drugs that affect blood sugar [3].
Side effects: Wegovy 0.5mg weight loss injection
Like all medicines, Wegovy 0.5mg weight loss injection can cause side effects. The most common are mild and temporary, such as nausea, vomiting, diarrhoea, constipation, and headache [1].
Most side effects improve as your body gets used to the medicine. Starting at a low dose and increasing gradually helps reduce the risk of side effects.
Rare but serious side effects include pancreatitis, gallbladder problems, kidney issues, and allergic reactions. If you notice severe abdominal pain, yellowing of the skin or eyes, or signs of an allergic reaction, seek medical advice immediately [1].
Drug interactions: Wegovy 0.5mg weight loss injection
Wegovy 0.5mg weight loss injection may interact with other medicines, especially those used to manage diabetes, such as insulin or sulfonylureas. These combinations can increase the risk of low blood sugar (hypoglycaemia), so your doctor may need to adjust your doses [3].
Some oral medications may be absorbed more slowly when used with Wegovy, due to its effect on stomach emptying. Tell your healthcare provider about all the medicines you take, including over-the-counter and herbal products [1].
Frequently asked questions: Wegovy 0.5mg weight loss injection
What is Wegovy 0.5mg used for in weight loss injections?
Wegovy 0.5mg weight loss injection is used to help adults lose weight and maintain weight loss, especially for those with obesity or weight-related health problems [2].
How does Wegovy 0.5mg weight loss injection work?
It mimics the GLP-1 hormone, helping you feel fuller for longer, reducing appetite, and supporting healthy weight loss [1].
How do I use the WeGovy 0.5mg weight loss injection pen?
Inject once a week, on the same day, into the fatty tissue of your abdomen, thigh, or upper arm. Rotate sites to avoid irritation [1].
What should I do if I miss a dose?
Please take it as soon as you remember (within five days). If you miss by more than five days, skip the missed dose and continue as usual [1].
How long does it take to see results with WeGovy 0.5mg weight loss injection?
Most people begin to see weight loss within a few weeks, but the full effects are typically observed over several months of consistent use [2].
Can I use Wegovy 0.5mg weight loss injection in combination with other weight loss medications?
Discuss with your prescriber first, as combining medicines may increase side effects or risks [3].
Are there foods or drinks I should avoid?
There are no specific foods to avoid; however, a healthy, calorie-controlled diet will help you achieve the best results [2].
Is Wegovy 0.5mg weight loss injection safe for everyone?
It’s not suitable for people with certain medical conditions or allergies. Always check with your healthcare provider [1].
Can I use Wegovy 0.5mg weight loss injection if I’m pregnant or breastfeeding?
No. Wegovy should not be used during pregnancy or breastfeeding. Stop treatment at least two months before planning a pregnancy [1].
Where can I get more information or support?
Speak to your GP, pharmacist, or contact Courier Pharmacy for personalised advice and support.
References
[1] Electronic Medicines Compendium (emc). (2025) Wegovy 1 mg solution for injection in pre-filled pen: Patient Information Leaflet. Available at: https://www.medicines.org.uk/emc/product/13800/pil#gref (Accessed: 30 August 2025).
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