Wegovy is a prescription weight loss injection designed for adults living with overweight or obesity. It contains semaglutide, an active ingredient that mimics a naturally occurring hormone known as GLP-1 (glucagon-like peptide-1). This hormone plays an important role in regulating blood sugar levels and appetite, helping you feel fuller for longer and reducing hunger cravings.
Wegovy is administered once weekly as part of a structured weight loss program that includes healthy eating and regular physical activity. When taken consistently as prescribed, semaglutide-based treatments like Wegovy have been shown to support significant weight loss, with some studies reporting average reductions of up to 21% of starting body weight.
Who can use Wegovy?
Wegovy is typically prescribed for adults with:
- A body mass index (BMI) of 30 or above, or
- A BMI of 27 or above alongside weight-related health conditions such as Type 2 Diabetes, sleep apnea, or high blood pressure
People who began treatment with obesity may also continue using Wegovy after reaching a healthier BMI to help maintain their weight loss and prevent weight regain.
How does Wegovy work?
The semaglutide in Wegovy works by activating GLP-1 receptors in the body. This helps:
- Reduce appetite and food cravings
- Slow stomach emptying to increase feelings of fullness
- Improve blood sugar regulation
- Support long-term weight management
By helping control hunger and calorie intake, Wegovy can make it easier to follow a calorie-controlled diet and maintain healthier eating habits over time.
How to inject Wegovy
Wegovy is supplied in pre-filled injection pens designed for once-weekly subcutaneous injections beneath the skin. Each pen contains four doses, and treatment should always follow the instructions provided by your healthcare professional.
Important guidance for using Wegovy includes:
- Inject Wegovy once per week on the same day each week
- The injection can be taken at any time of day, with or without food
- Suitable injection sites include the stomach, upper thighs, or upper arms
- Rotate injection sites regularly and avoid irritated or damaged skin
- Always inspect the liquid before use — it should appear clear and colorless
- Attach a new needle before each injection and dispose of used needles safely
For first-time use, users may need to perform a flow check to ensure the pen is functioning correctly before administering their dose.
Wegovy storage instructions
Before opening, Wegovy pens should be stored in a refrigerator between 2°C and 8°C. Once in use, the pen can usually be stored:
- At room temperature up to 30°C for up to 6 weeks, or
- In a refrigerator between 2°C and 8°C
Many people prefer removing the pen from the fridge around 30 minutes before injection to allow it to reach room temperature for a more comfortable experience.
After the fourth and final dose has been used, the pen should be disposed of safely according to local guidelines or healthcare advice.









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