How Long Does Wegovy Take to Start Working?

Wegovy (semaglutide 2.4 mg) is a once-weekly injectable medication for chronic weight management. Most people notice appetite suppression within the first 1–2 weeks, but meaningful weight loss typically appears after 4–8 weeks — with full effects at the 68-week maintenance dose.

📋 Quick Reference

Drug Name	Semaglutide (Wegovy)
Dose Schedule	5-step escalation over 16 weeks
First Appetite Effects	Week 1–2
Visible Weight Loss	Week 4–8
Peak Clinical Effect	Week 68 (STEP 1 trial)

✅ Step-by-Step Fix

Week 1–4 (0.25 mg dose)

Appetite begins to reduce. Some nausea is normal. Weight loss of 1–2 kg possible but not guaranteed.

Week 5–8 (0.5 mg dose)

Hunger signals decrease more noticeably. Energy intake drops. Scale starts to move for most users.

Week 9–12 (1.0 mg dose)

Consistent weight loss expected. GI side effects usually ease by now.

Week 13–16 (1.7 mg dose)

Significant appetite suppression. Average -8% body weight in clinical trials at this phase.

Week 17+ (2.4 mg maintenance)

Full therapeutic dose. STEP 1 trial showed average -15.3% body weight at 68 weeks.

Track Progress Monthly

Weigh yourself weekly at the same time. Discuss progress with your prescriber at each check-in.

❓ Frequently Asked Questions

What if I’m not losing weight on Wegovy after 4 weeks?

Small deficits are normal early on. Give it 12–16 weeks at escalating doses before evaluating effectiveness with your doctor.

Does Wegovy work immediately?

No. The dose escalation phase is designed to minimise side effects — full appetite suppression builds gradually over weeks.

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How Long Does It Take for Wegovy to Start Working?