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Jan.2024 18
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Weight Loss Peptides: Everything You Need to Know
Introduction
Peptide drugs are used to treat a variety of health conditions. Some may even help people who are overweight and obese lose weight and manage obesity-related conditions.
Details
What peptides work best for losing weight?

There are a number of peptide drugs that are marketed for weight loss. The following were recently identified by the Journal of Obesity & Metabolic SyndromeTrusted Source as the “next generation” of weight-loss medications.

Your doctor can help you find the one that works best for you and your health.

Semaglutide

The peptide drug of the moment is semaglutide. This GLP-1 receptor agonist is labeled to treat type 2 diabetes (brand name Ozempic) or obesity (brand name Wegovy). It’s approvedTrusted Source by the Food and Drug Administration (FDA) and typically given via a once-weekly injection.

The effects of this drug seem to work well in the first yearTrusted Source and may plateau around week 60Trusted Source of treatment.

Liraglutide

Liraglutide (brand name Saxenda) is another GLP-1 receptor agonist that is specifically approvedTrusted Source for weight loss. Researchers explain that it reduces appetite and helps people keep weight off for at least a year. This medication is typically given in a once-daily injection.

It’s important to note that — while both semaglutide and liraglutide are “significantlyTrusted Source” effective weight loss tools — expertsTrusted Source believe semaglutide is a better value for the money than liraglutide.

Tirzepatide

Tirzepatide (brand name Mounjaro) is also a GLP-1 receptor agonist used to treat type 2 diabetes. In a study on over 2,500 adults, people who took varying doses of tirzepatide (ranging from 5 mg to 15 mg) experienced a “substantial and sustained” reduction in their weight over 72 weeks compared to those who received a placebo.

This drug is approved by the FDA to treat diabetes and can be used off-label to treat obesity. It’s typically given via a once-weekly injection.

How much weight can you lose on peptides?

Weight loss varies by person and dosage of peptides.

In a clinical trial of Ozempic (semaglutide), participants lost 8.3% of their body weight in a year compared to just 2.2% in the control group. If a person weighs 300 lb, for example, 8.3% of their body weight figures to a loss of 25 lb.

Other reports found the following:

  • People who took Wegovy lost an average of 14.9%Trusted Source of their body weight compared to 2.4% in the placebo group over a 68-week period.
  • People who took liraglutide lost around 8%Trusted Source of their body weight compared to 2.6% in the control group over a 56-week period.
  • People who took tirzepatide experienced up to a 15% loss of body weight at the end of a 72-week study period.

Combining peptides with exercise is even more effective. In one study on liraglutide, participants who took the drug and exercised 150 minutes a week (moderate intensity) or 75 minutes a week (vigorous intensity) reduced their weight and body fat twice as much as participants who took the drug alone.

Not only that, but combining exercise with medication also improved their insulin sensitivitycardiovascular fitness, and overall sense of well-being.

Do you need a prescription to get peptides for weight loss?

You’ll need a prescription for peptide drugs. They’re administered either daily or weekly and may be taken by injection or orally.

Currently, Wegovy (semaglutide) is approved for use in people who have a body mass index (BMI) in the obese category (a BMI of 30Trusted Source or above) or people who are overweight (a BMI of 27 or above) who also have at least one weight-related health condition, including:

The other peptide drugs may have different indications for use and dosage guidelines. Speak with your doctor to see whether these drugs are the right fit for you and your health goals.

Are there side effects from taking peptides for weight loss?

Overall, peptides do not cause serious side effects. The most common side effects with GLP-1 receptor agonists are gastrointestinal issues (nausea, constipation, and diarrhea). These effects may range from mild to moderate and mainly show up when increasing dosages.

Researchers explain that weight loss in people who experience GI issues is slightly greater than in those who do not experience this side effect.

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