Description

Wegovy (semaglutide) is a once‑weekly injectable for chronic weight management that helps reduce body weight and improve metabolic markers; learn dosing, benefits, safety, and patient tips.

What is Wegovy

Wegovy contains semaglutide, a GLP‑1 receptor agonist approved for chronic weight management in adults with obesity or overweight plus at least one weight‑related condition. Wegovy is supplied as a once‑weekly subcutaneous injection and carries an important boxed warning about thyroid C‑cell tumors observed in animal studies; patients with a personal or family history of medullary thyroid carcinoma or MEN 2 should not use Wegovy.

How Wegovy Works

• Mechanism: Semaglutide mimics the incretin hormone GLP‑1 to increase glucose‑dependent insulin secretion, reduce glucagon release, slow gastric emptying, and decrease appetite, which together produce sustained reductions in calorie intake and body weight.
• Clinical effect: In clinical trials, Wegovy produced clinically meaningful and sustained weight loss when combined with lifestyle interventions.

Dosing and Administration

• Titration schedule: Wegovy is started at a low weekly dose and titrated every 4 weeks to reduce gastrointestinal side effects; the typical escalation is 0.25 mg → 0.5 mg → 1 mg → 1.7 mg → 2.4 mg, with 2.4 mg once weekly the recommended maintenance dose for most patients.
• Administration: inject subcutaneously once weekly on the same day each week, at any time of day, with or without food; rotate injection sites between the abdomen, thigh, and upper arm.
• Missed dose: follow prescriber guidance—do not double doses to make up for a missed injection.

Benefits and Who May Benefit

• Primary benefit: significant, sustained weight loss when used with diet and exercise.
• Metabolic improvements: reductions in waist circumference, improvements in glycaemic markers, and favorable effects on cardiometabolic risk factors have been observed in trials.
• Ideal candidates: adults with BMI ≥30 kg/m² or BMI ≥27 kg/m² with at least one weight‑related comorbidity, after evaluation by a healthcare professional. Wegovy 0.25mg, Wegovy 0.5mg, Wegovy 1mg, Wegovy 1.7mg, Wegovy 2.4mg

Safety, Side Effects, and Contraindications

• Boxed warning: rodent studies showed thyroid C‑cell tumors; the human relevance is unknown—Wegovy is contraindicated in patients with personal or family history of medullary thyroid carcinoma or MEN 2.
• Common side effects: nausea, vomiting, diarrhea, constipation, abdominal pain, and decreased appetite; these are most pronounced during dose escalation and often improve over time.
• Serious risks: pancreatitis, gallbladder disease, acute kidney injury, and severe hypoglycemia when combined with insulin or insulin secretagogues; seek urgent care for severe abdominal pain or signs of allergic reaction.
• Counseling: discuss pregnancy plans, thyroid history, and current medications with your clinician before starting Wegovy.

Practical Patient Tips

• Follow the titration schedule to improve tolerability and reduce GI side effects.
• Stay hydrated and report persistent nausea or vomiting to your healthcare provider.
• Medication interactions: if you take insulin or sulfonylureas, your clinician may lower doses to reduce hypoglycemia risk.
• Storage and handling: use the manufacturer’s instructions for refrigeration and in‑use storage; discard pens after the labeled in‑use period.
• Dosage: Wegovy 0.25mg, Wegovy 0.5mg, Wegovy 1mg, Wegovy 1.7mg, Wegovy 2.4mg

Common side effects of Wegovy include:

• upset stomach or indigestion
• dizziness
• burping or gas (flatulence)
• bloating
• reflux or heartburn
• hair loss
• reactions at the injection site, such as redness, swelling, or soreness
• gallstones
• inflamed stomach (gastritis), which can cause nausea, vomiting, and stomach ache
• hypoglycemia (low blood sugar) in patients with diabetes, which is more likely if you’re taking sulfonylurea or insulin
• a change in the way food or drink tastes
• a change in skin sensations

 

Uncommon side effects of Wegovy include:

• fast heartbeat
• an increase in pancreatic enzymes, which will show up in blood tests
• delayed emptying of the stomach (gastroparesis)
• hypoglycemia in people without diabetes
• an increased level of bilirubin in the blood, which can cause jaundice – symptoms include yellowing of the whites in your eyes and skin

 

Wegovy also has some serious side effects, which should be treated straight away:

• In diabetic patients, a common serious side effect is complications of diabetic eye disease (diabetic retinopathy). If you have diabetes, you should inform your doctor if you experience eye problems, such as changes in vision, during treatment with this medication. Wegovy 0.25mg, Wegovy 0.5mg, Wegovy 1mg, Wegovy 1.7mg, Wegovy 2.4mg
• An uncommon serious side effect is an inflamed pancreas (acute pancreatitis). If you have long-lasting and severe pains in your stomach or back, speak to your doctor straight away.
• Another uncommon and serious side effect is the development of kidney or bladder stones. Symptoms include a change in urine colour or difficulty urinating and lower abdomen or back pain.
• A rare, serious side effect of Wegovy is a severe allergic reaction. Get to A&E straight away if you have breathing problems, wheezing, difficulty swallowing, swelling in your face and throat, dizziness, or weakness.
• Another rare and serious side effect is that Wegovy may increase the risk of fractures, including hip fractures. You should attend A&E straight away if you think you’ve fractured a bone.
• A serious side effect (there currently isn’t enough data available to know how often it occurs) is bowel obstruction. This is a severe form of constipation with other symptoms such as stomach ache, vomiting, and bloating. Contact Us

FAQ

• How long until Wegovy works? Many patients see weight changes within weeks, with maximal effects over months when combined with lifestyle changes.
• Can Wegovy be used for diabetes? Wegovy is approved for weight management; semaglutide formulations for diabetes use different dosing and product labels—discuss options with your clinician.
• Is Wegovy safe long term? Long‑term safety requires ongoing monitoring; discuss thyroid history, pancreatitis risk, and kidney function with your provider.