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GLP-1 Weight Loss

What is Wegovy®?

K
By Kelly Miller·June 21, 2026
Fact-checkedUpdated Aug 23, 2026
3 min read

Wegovy® is the weight-loss brand of one of the most popular medicines around. And now there is even a Wegovy® pill — big news for people who do not want shots.

Here is the simple version.

The short version

  • Wegovy® is a weekly shot for weight loss (and now a pill, too).
  • The medicine inside is semaglutide.
  • It is the same medicine as Ozempic®. Wegovy® is the weight-loss brand.
  • In studies, people lost about 15% of their body weight.
  • You need a prescription to get it.
The real Wegovy® pen. Image: Novo Nordisk.
The real Wegovy® pen. Image: Novo Nordisk.

What is it?

Wegovy® is made by Novo Nordisk. A doctor gives it to adults (and some teens) to help them lose weight and keep it off, when extra weight is a health risk.

It is the same medicine as Ozempic®. But Wegovy® is the brand made and dosed for weight loss.

What is it used for?

  • Help adults and some teens lose weight when it is a health risk.
  • Help keep weight off, with healthier eating and more movement.
  • Lower the risk of some heart problems in certain adults.

How does it work?

After you eat, your gut makes a natural “full” signal called GLP-1. Wegovy® copies that signal.

Your stomach empties slower and you feel full sooner. So you want to eat less.

Shot or pill? How you take it

The classic Wegovy® is a once-a-week shot with a simple pen. You start low and go up over a few months.

There is now also a Wegovy® pill — a newer choice for people who would rather skip needles. Your provider can tell you which one fits you.

How it compares to the others

Five big names get mixed up a lot. Here is how they line up:

Brand Medicine Made by Shot or pill? Mainly for
Zepbound® tirzepatide Eli Lilly Weekly shot Weight loss
Mounjaro® tirzepatide Eli Lilly Weekly shot Type 2 diabetes
Ozempic® semaglutide Novo Nordisk Weekly shot Type 2 diabetes
Wegovy® (this one) semaglutide Novo Nordisk Weekly shot (or a pill) Weight loss
Foundayo™ orforglipron Eli Lilly Daily pill Weight loss

What about side effects?

Side effects to know

The most common side effects are tummy problems, mostly early on:

  • Feeling sick to your stomach
  • Diarrhea or constipation
  • Upset stomach
  • Less appetite

They usually fade as you adjust. A few can be serious, so your doctor will explain what to watch for.

The good and the not-so-good

What people like

  • Made and dosed for weight loss
  • Comes as a shot or a pill
  • Only once a week (shot)
  • Also helps heart risk for some

What to keep in mind

  • The shot uses a needle
  • Can be costly without insurance
  • Tummy side effects at first
  • Prescription only

Common questions

Is Wegovy® the same as Ozempic®?

Yes — same medicine (semaglutide). Wegovy® is the brand for weight loss. Ozempic® is the brand for diabetes.

Is there really a Wegovy® pill?

Yes. Along with the weekly shot, there is now a pill. Foundayo™ is another pill to know about.

How much weight do people lose?

In the main study, people lost about 15% of their body weight in about a year, along with diet and exercise. Everyone is different.

Do I need a prescription?

Yes. A licensed doctor decides if Wegovy® is safe and right for you.

Please remember

These are prescription medicines. Only a licensed doctor can decide if one is right for you. Only a pharmacy can fill it. This page is for learning. It is not medical advice.

The numbers here come from studies of the FDA-approved, brand-name products. They do not apply to copycat or “compounded” versions. Always talk to a licensed provider before you start or stop any medicine.

Keep reading

New to all this? These simple guides go together:

Important notices & disclaimers

Editorial & medical: This guide is general education, not medical advice. Talk to a licensed clinician before starting, stopping, or changing any medication.

Affiliate disclosure: Peptides.io may earn a commission from links to providers — it never changes what you pay or how we rank them, and never influences our recommendations.

Compounded GLP-1 (FDA): Compounded semaglutide and tirzepatide are not FDA-approved and have not been evaluated by the FDA for safety, effectiveness, or quality. They are not generic versions of, or equivalent to, branded medications such as Ozempic®, Wegovy®, Mounjaro®, or Zepbound®. Clinical-trial results cited here apply only to those branded formulations — not to compounded preparations.

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K
Written by

Kelly Miller

Kelly Miller is a health writer covering peptides, metabolic health, and the research shaping modern longevity and recovery. She came from science journalism at general-audience health publications, where she spent years translating dense clinical trials into stories regular people can actually use. Outside of writing she is a distance runner and home cook.

Published June 21, 2026 · Updated August 23, 2026

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