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Medications

Wegovy & Ozempic

Semaglutide

Last reviewed: September 2026Based on 6 clinical trials
FDA approved 2021GLP-1 medicine

Available as a weekly injection or daily pill — both work on the same fullness signal

Weekly or Daily pill

14.9%

average weight loss in studies — STEP 1 trial (68 weeks)

That's ~33 lbs for a 220 lb person

These are averages. Your results will depend on your dose, how consistently you take it, and your body.

Key facts

At a glance

The numbers you need before deciding.

Weight loss

14.9–16.6%

~33–37 lbs for a 220 lb person

Monthly cost

$349–$399/mo

Pill form (Wegovy 25mg): $149–$299/month self-pay by dose. Injection form (Wegovy 2.4mg): $349–$399/month self-pay via NovoCare Pharmacy (list price ~$1,349/month before that programme).

How you take it

Weekly injection or daily pill

Same drug — pill $149–$299/mo · injection $349–$399/mo self-pay

Main side effect

Nausea

About 4 in 10 people · usually temporary

Fat vs lean

79% fat

21% lean · STEP 1 body scan analysis

If you stop

~12% regain

Within 1 year · STEP 1 extension — Wilding et al. Diabetes Obes Metab 2022

Before you start

Learn about this treatment

Everything you'd want to know before deciding.

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On treatment

Already taking this?

Practical guides for people currently on this medication.

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Compare

Side-by-side comparisons

See how this drug compares with another, side by side.

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Clinical evidence

How it compares in trials

Average weight loss % — from individual phase 3 trials

Wegovy injection14.9%
Oral Wegovy (pill)16.6%
Zepbound (tirzepatide)20.9%
Body composition and what happens after stopping

What does the lost weight consist of?

79% fat21% muscle
Fat mass — the primary target of treatmentMuscle, bone, water

Resistance training (weight lifting, bodyweight exercises) can significantly reduce the muscle loss. Aim for 2–3 sessions per week during weight loss.

Source: STEP 1 body scan analysis

What happens when you stop

Source: STEP 1 extension — Wilding et al. Diabetes Obes Metab 2022

−17.3%
Lost on
medication
+11.7%
Regained
after stopping
−5.6%
Still below start
after 1 year
On medicationAfter stopping~68% regainedStartStopped12 months later

In studies, people regained about 68% of the weight they lost within a year of stopping — ending about 5.6% below their starting weight. This is the body returning to its defended weight — not a personal failure. Current evidence supports long-term use for people who respond well.

Is this right for you?

Who this tends to fit

Relevant if you

  • Want a proven GLP-1 drug with proven heart benefits
  • Want the choice between injection and a lower-cost pill ($149–$299/month)
  • BMI 30+ or 27+ with health conditions
  • Prefer a well-established weight loss medication with a long trial record

Not right if you

  • You have a personal or family history of medullary thyroid cancer
  • You have a history of pancreatitis
  • You are pregnant or planning to become pregnant
  • You want more weight loss than semaglutide's own trials have shown

Safety

Important cautions

  • In animal studies, semaglutide caused thyroid tumours. It is unknown whether this applies to humans, but it is not prescribed to people with a personal or family history of medullary thyroid cancer.
  • Stop taking and contact your doctor immediately if you have persistent severe abdominal pain — this may be a sign of pancreatitis.
  • This drug may increase the risk of gallbladder problems, including gallstones. Tell your doctor if you develop sudden upper abdominal pain.

Read the boxed warning explained in full. See what the label says about pregnancy and breastfeeding. Availability varies by pharmacy — check current shortage status.

Practical guide

How to take Wegovy & Ozempic

1

Available as a weekly injection (Wegovy 2.4mg) or a daily pill (Wegovy 25mg)

2

Injection: inject under the skin of your thigh, abdomen, or upper arm once per week. Store in the refrigerator.

3

Pill: take on an empty stomach with no more than 4 oz of plain water. Wait at least 30 minutes before eating, drinking, or taking other medications.

4

You start at a low dose and your doctor gradually increases it over about 4–5 months so your body can adjust

Common questions

FAQ

For the full regain timeline, week by week, see what the trials found after stopping.

Questions to ask your doctor

  • →Am I a good candidate given my health history and any other conditions I have?
  • →Do I have any contraindications I should know about?
  • →What results should I realistically expect, and over what timeframe?
  • →Which side effects should make me contact you?
  • →How long should I try this before we decide if it's working?
  • →What happens if I need to stop — how do I come off it safely?

Written and maintained by one person · Built with agentic AI tools · Every number checked against the cited trial · Not medical advice

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Medical disclaimer: This website is for informational purposes only and does not constitute medical advice. Always consult a qualified healthcare provider before starting, stopping, or changing any treatment. Prices shown are United States self-pay or list prices and vary by insurance and country.