Wegovy is semaglutide, a once-weekly GLP-1 receptor agonist made by Novo Nordisk and given as a small injection under the skin. It is FDA-approved for chronic weight management, and also to lower the risk of major cardiovascular events in adults who have established heart disease along with overweight or obesity. It is the higher-dose weight version of the same molecule sold as Ozempic for type 2 diabetes.
This page is a hub. Each section gives you the short version of a Wegovy topic, then points you to a deeper article if you want the full detail. Wegovy is a prescription medicine, so use this as background reading and let a clinician guide any actual treatment decision. Wegovy is not a shortcut or a crash-diet pill; it is a tool that changes how hunger and fullness signals reach the brain, which is why it works best when paired with steady eating habits, some movement, and honest expectations. If you are new to this class of drugs, the sections below are ordered the way most people naturally ask their questions, from how it works through what it costs.
Wegovy quick facts
| Active ingredient | Semaglutide |
| Drug class | GLP-1 receptor agonist |
| Maker | Novo Nordisk |
| How taken | Once-weekly injection under the skin |
| FDA-approved use | Chronic weight management; cardiovascular risk reduction in eligible adults |
| Maintenance dose | 2.4 mg once weekly |
| Average weight loss | About 15% of body weight over 68 weeks |
| List price per month | Roughly $1,349 (cash-pay option around $499 for eligible patients) |
How Wegovy works
Wegovy mimics a natural gut hormone called GLP-1. That signal reduces appetite and quiets the constant "food noise" that pulls many people back to the fridge, and it slows how fast the stomach empties, so meals feel more filling. The practical result is that most people simply eat less without white-knuckling through hunger, because the drive to eat is genuinely lower rather than being suppressed by willpower alone. Semaglutide also acts on appetite centers in the brain, not just the stomach, which helps explain why cravings and portion sizes tend to shrink together. If you want the biology in plain language, our guide on how semaglutide drives weight loss walks through it step by step. One important caveat: weight is often partly regained if the medication is stopped, which is why it is framed as a long-term treatment rather than a short course. Understanding this mechanism up front helps set expectations for everything that follows, from side effects during titration to why maintenance dosing matters.
GLP-1 comparison
| Ozempic | Wegovy | Mounjaro | Zepbound | |
|---|---|---|---|---|
| Active ingredient | Semaglutide | Semaglutide | Tirzepatide | Tirzepatide |
| Drug class | GLP-1 | GLP-1 | GLP-1 + GIP | GLP-1 + GIP |
| Maker | Novo Nordisk | Novo Nordisk | Eli Lilly | Eli Lilly |
| Approved for weight loss | ✕ | ✓ | ✕ | ✓ |
| Approved for type 2 diabetes | ✓ | ✕ | ✓ | ✕ |
| Approved for sleep apnea | ✕ | ✕ | ✕ | ✓ |
| Dosing | Weekly | Weekly | Weekly | Weekly |
| Max dose | 2 mg | 2.4 mg | 15 mg | 15 mg |
| Average weight loss | ~10-15% | ~15% | ~20% | ~21% |
| Cardiovascular benefit | ✓ | ✓ | Emerging | Emerging |
| List price / month | ~$997 | ~$1,349 | ~$1,069 | ~$1,086 |
| Manufacturer cash program | ✕ | NovoCare ~$499 | ✕ | LillyDirect $349-499 |
Wegovy dosing
Wegovy is not started at its full strength. The dose is titrated slowly over about 16 to 20 weeks, climbing from 0.25 mg up to the maintenance dose of 2.4 mg once weekly. That 2.4 mg is the maximum, and the gradual ramp exists to help your body adjust and to keep side effects manageable. Rushing the schedule tends to backfire, since the biggest surge in nausea and other stomach symptoms usually lines up with each dose increase. Some people move up more slowly than the standard plan, and a clinician can stretch out a given step if symptoms are rough. For the full step-by-step schedule and what to do about missed doses, see the detailed Wegovy dosage guide.
Wegovy side effects
The most common Wegovy side effects are gastrointestinal: nausea, diarrhea, and constipation. These tend to be worst early on and during each dose increase, then ease as your body adapts. Wegovy also carries a boxed warning about thyroid C-cell tumors, which is why it is not for everyone. Our full breakdown of Wegovy side effects covers who should avoid it and how to tell routine from serious symptoms. Because nausea is the number one complaint, many people also find our shared guide on managing nausea on a GLP-1 helpful in the first few weeks.
Wegovy weight-loss results
In the STEP-1 trial, adults on Wegovy lost about 15% of their total body weight over 68 weeks (14.9% on average), and roughly a third of people lost 20% or more. Those are strong numbers, but they came alongside diet and activity support, and individual results vary widely from person to person. Some people respond much more than average, and a smaller group sees relatively little change even at the full dose. Weight loss also tends to be fastest in the first few months and then slows as the body settles at a new set point. See the full data in our Wegovy weight-loss results article, and pair it with our piece on setting realistic weight-loss goals on a GLP-1 so your expectations match what the science actually shows.
Wegovy cost
Price is where many people get stuck. The list price is roughly $1,349 a month, though a NovoCare cash-pay option runs around $499 a month for eligible self-pay patients, and insurance coverage varies a lot. Our guide to Wegovy cost without insurance lays out the savings programs and cash options in detail. Cost is also why some people look at compounded semaglutide versus Wegovy, a comparison worth reading carefully before you decide.
How Wegovy compares to other options
Wegovy is one of several injectable options, and the right choice depends on your goals, your insurance, and how your body responds. A few of the most common head-to-head questions:
- Ozempic vs Wegovy - the same molecule at different doses and approvals.
- Wegovy vs Zepbound - semaglutide against the newer dual-action tirzepatide.
- Mounjaro vs Wegovy - how the diabetes-branded tirzepatide stacks up.
- Saxenda vs Wegovy - a daily older GLP-1 against the weekly newer one.
Each comparison covers effectiveness, side effects, dosing, and cost so you can bring specific questions to your clinician.
Living with Wegovy day to day
Once you are on a steady dose, the practical questions shift to daily life. Because Wegovy slows digestion and changes appetite, drinking is a common concern, and our guide on GLP-1 medications and alcohol explains what to watch for. Keeping the medication cool and on schedule matters too, so if you are on the move, read our tips on traveling with a GLP-1 medication. These habits are shared across all GLP-1 drugs, not just Wegovy, and they make the difference between a smooth routine and an avoidable setback.
Scientific References
3 sources- 1
Wilding JPH, Batterham RL, Calanna S, et al.
Once-Weekly Semaglutide in Adults with Overweight or Obesity (STEP-1)
New England Journal of Medicine · 384(11) · 2021PMID: 33567185
NEJM - 2
Drucker DJ
Mechanisms of Action and Therapeutic Application of Glucagon-like Peptide-1
Cell Metabolism · 27(4) · 2018PMID: 29617641
PubMed - 3
U.S. Food and Drug Administration
Prescribing information: Wegovy (semaglutide)
U.S. Food and Drug Administration · 2024
References open in a new tab. Content is reviewed against peer-reviewed literature as part of our editorial policy.
About the author
Modern Weight Science Editorial Team
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Frequently Asked Questions
What is Wegovy used for?
Wegovy is FDA-approved for chronic weight management in adults and eligible adolescents, and to reduce the risk of major cardiovascular events in adults who have established cardiovascular disease along with overweight or obesity. It is used alongside diet and activity changes, not as a standalone fix.
How is Wegovy different from Ozempic?
Both are semaglutide made by Novo Nordisk. Wegovy is the higher-dose version approved for weight management, while Ozempic is approved for type 2 diabetes. See our Ozempic vs Wegovy comparison for the details on doses and approvals.
How much weight can you lose on Wegovy?
In the STEP-1 trial, adults lost about 15% of their body weight over 68 weeks on average, and roughly a third lost 20% or more. Results vary by person and depend on staying on treatment along with diet and activity support.
What is the maintenance dose of Wegovy?
The maintenance dose is 2.4 mg once weekly, reached by titrating up slowly over about 16 to 20 weeks from a starting dose of 0.25 mg. The 2.4 mg dose is the maximum.
How much does Wegovy cost?
The list price is roughly $1,349 a month. A NovoCare cash-pay option runs around $499 a month for eligible self-pay patients, and insurance coverage varies. Our Wegovy cost without insurance guide covers the savings options in detail.
Do you regain weight if you stop Wegovy?
Weight is often partly regained if Wegovy is stopped, because the appetite-reducing effect fades once the medication leaves your system. That is why it is generally viewed as a long-term treatment guided by a clinician.
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Where to read next
Not medical advice. This guide is for general education only. GLP-1 medications, dosing, and treatment suitability are decisions for you and a licensed clinician who knows your full medical history.