What is Wegovy, and What is it Used For?
Wegovy is a prescription-only weight loss medication containing the active ingredient semaglutide. Administered as a once-weekly injection, it is designed to support long-term weight management rather than a short-term fix.
Wegovy is typically prescribed for individuals who struggle to lose weight through diet and exercise alone, particularly when their weight impacts their health or increases the risk of future medical conditions. When combined with healthy lifestyle changes, studies show that Wegovy can help patients lose an average of 21% of their body weight over 72 weeks.
For most patients, the primary benefit of Wegovy is that it simplifies sticking to a calorie-controlled diet by:
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Reducing overall appetite
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Supporting better portion control
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Lowering food cravings over time
What is GLP-1, and How Does Wegovy Work?
GLP-1 (glucagon-like peptide-1) is a naturally occurring hormone in the body responsible for regulating appetite and signaling fullness. Wegovy works by mimicking this hormone, effectively tricking the body into feeling satisfied for longer periods.
Clinical evidence shows that managing eating habits becomes significantly easier when Wegovy is paired with regular physical activity. Because the medication directly targets the brain’s appetite pathways, patients no longer have to rely on willpower alone to resist cravings.
By naturally curbing hunger, Wegovy helps create the consistent calorie deficit required for meaningful weight loss. This steady support allows patients to step-by-step establish healthier, permanent routines around food, physical activity, and sleep—the essential pillars of lasting weight management.
How to Inject Wegovy
Wegovy is supplied as a once-weekly, pre-filled injection pen. It is prescribed for your personal use only and must never be shared with anyone else.
Step 1: Schedule Your Dose
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Pick a Day: Choose a convenient day of the week that fits your schedule.
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Timing: Inject at any time of day, with or without food.
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Consistency: Stick to the same day each week to build a consistent routine.
Step 2: Prepare and Administer the Injection
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Check Your Pen: Wash your hands and verify the pen label to ensure you have the correct strength.
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Inspect the Liquid: The solution must be clear and colourless. Do not use the pen if the liquid is cloudy or contains particles.
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Attach the Needle: Remove the pen cap and securely attach a brand-new needle (never reuse or recycle needles).
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Prime the Pen: Prime the device if required, following the specific steps in your patient leaflet.
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Inject: Gently pinch the skin at your chosen site, insert the needle at the correct angle, and press and hold the injection button until the full dose is delivered.
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Dispose Safely: Remove the needle, immediately discard it into a sharps bin, and replace the pen cap.
Where to Inject Wegovy
Wegovy must be injected just under the skin (subcutaneous injection).
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Approved Sites: The abdomen (stomach), thigh, or upper arm.
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Rotate Sites: Change your exact injection location each week to prevent skin soreness or irritation.
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Areas to Avoid: Never inject into skin that is bruised, tender, red, or hard.
What to Do If You Miss a Dose
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If your next scheduled dose is more than 2 days (48 hours) away: Take the missed dose as soon as you remember.
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If your next scheduled dose is less than 2 days (48 hours) away: Skip the missed dose entirely and resume your regular schedule on your usual day.
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Important Safety Rule: Never take two doses within the same 48-hour window to make up for a missed injection.
Important Safety and Usage Information for Wegovy
Wegovy is a prescription-only medication and is not suitable for everyone. Before starting treatment, you must complete a full clinical consultation to assess your medical history and ensure this medicine is safe for your use.
How to Take Wegovy Safely
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Follow the Schedule: Use Wegovy exactly as prescribed. Stick to the recommended dose escalation schedule; starting at too high a dose or increasing too quickly significantly raises your risk of nausea and stomach upset.
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Be Consistent: Administer your injection on the same day each week.
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Support Your Body: Maintain regular, balanced meals and stay well-hydrated throughout your treatment. Do not skip meals entirely, as severe calorie restriction can worsen fatigue and other side effects.
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Lifestyle Integration: Wegovy is designed for long-term weight management. It works most effectively when paired with a calorie-controlled diet, increased physical activity, and healthy sleep routines.
Who Cannot Use Wegovy (Contraindications)
Do not use Wegovy if you:
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Are allergic to semaglutide or any other ingredient in the injection.
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Are pregnant, planning a pregnancy, or breastfeeding.
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Are under 18 years of age.
Conditions Requiring Extra Caution
Speak to your healthcare provider before starting Wegovy if you have a history of:
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Pancreatitis (inflammation of the pancreas)
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Gallstones or gallbladder disease
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Diabetic retinopathy (diabetes-related eye disease)
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Other significant, long-term health conditions
Medication Interaction Warning: If you take other diabetes medications, such as insulin or sulfonylureas, using Wegovy may increase your risk of dangerously low blood sugar (hypoglycaemia).
Managing Digestive Side Effects
Because Wegovy slows down digestion, it can cause or worsen symptoms like constipation, bloating, and acid reflux—particularly when you are increasing your dose. To help manage and reduce these effects:
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Eat smaller, more frequent portions
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Avoid very rich, fatty, or greasy foods
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Drink plenty of water throughout the day
When to Seek Immediate Medical Attention
Stop treatment and seek urgent medical advice if you experience:
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Severe, persistent stomach pain (a potential sign of pancreatitis)
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Symptoms of an allergic reaction (such as swelling of the face, lips, tongue, or throat, or difficulty breathing)
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Signs of gallbladder issues
You should also contact a doctor promptly if you experience severe, ongoing vomiting or diarrhoea. This can lead to acute dehydration, which can negatively affect kidney function. If you cannot keep fluids down or feel unusually weak, seek clinical advice right away.
Always thoroughly read the patient information leaflet included in your medication pack for a complete list of warnings, precautions, and side effects.
Wegovy contains the active medicine semaglutide, which is a GLP-1 receptor agonist. This is the ingredient that helps control appetite, reduce cravings, and support long-term weight loss.
Alongside the active medicine, Wegovy also contains several inactive ingredients. These are added to stabilise the injection solution, keep the medicine safe during storage, and ensure it can be delivered effectively under the skin.
- Disodium phosphate dihydrate
- Sodium chloride
- Water for injections
