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GLP-1 agonist

Semaglutide

Also known as Ozempic, Wegovy

The blockbuster GLP-1 that quiets appetite and drives real weight loss.

Clinical evidence

Overview

Semaglutide is a GLP-1 receptor agonist - a synthetic version of a hormone your gut naturally releases after eating. It mimics the GLP-1 hormone to slow gastric emptying, reduce appetite, and improve blood sugar, which together create a sustained reduction in caloric intake that most people cannot achieve through willpower alone. It is sold under the brand names Ozempic and Wegovy and is FDA-approved, one of the most clinically validated weight-loss medications available today. The primary use is fat loss and metabolic health. Semaglutide is a strong match for people whose main goals are losing body fat and supporting long-term metabolic health - particularly those who have struggled to sustain calorie deficits with diet and exercise alone. It is taken as a once-weekly subcutaneous injection, on the same day each week. Starting dose is 0.25 mg and titration progresses gradually up to a maximum of 2.4 mg, depending on response. Dosing is guided by how your body responds, not by sex. The slow titration is intentional - it keeps GI side effects manageable. The most common side effects are nausea and gastrointestinal upset, particularly early in titration. Semaglutide is not appropriate for people who are pregnant or who have a personal or family history of medullary thyroid cancer. It should not be combined with other GLP-1 agonists such as tirzepatide, retatrutide, or liraglutide. Treatment is ongoing and requires clinical supervision. It is not a short cycle - patients continue under a clinician's care for as long as the therapy is appropriate. Exact starting dose, titration schedule, and duration are set with a licensed provider in the PepDepo network at your consult.

At a glance

Route
SC injection
Dose
0.25-2.4 mg
Frequency
Once weekly
Timing
Same day each week
Cycle
Ongoing under supervision
By sex
Dosed by response, not sex; titrated slowly to limit nausea.

Combining

Stacks well with: Cagrilintide, AOD-9604, 5-Amino-1MQ

Avoid combining with: Tirzepatide, Retatrutide

Safety

Nausea, GI upset; not for personal/family history of medullary thyroid cancer.

Regulatory: FDA-approved (Ozempic/Wegovy).

Not appropriate if: pregnant.

Questions

How is semaglutide taken?

Semaglutide is a once-weekly subcutaneous (under-the-skin) injection. You use it on the same day each week. The dose starts low at 0.25 mg and is increased gradually up to a maximum of 2.4 mg based on how you respond.

How does it actually reduce my appetite?

It mimics the GLP-1 hormone your gut releases after eating. This slows how quickly your stomach empties, signals fullness to your brain, and helps stabilize blood sugar - all of which reduce how hungry you feel between meals.

Who is semaglutide used for?

It is primarily used for fat loss and metabolic health. It suits people who have a hard time maintaining a calorie deficit through diet alone and want a clinically backed tool to support that process.

What side effects should I expect?

Nausea and gastrointestinal upset are the most common, especially early on. The slow dose titration is specifically designed to keep these manageable. Most people find they ease over the first few weeks.

Are there conditions that rule it out?

Yes. Semaglutide is not appropriate during pregnancy or for anyone with a personal or family history of medullary thyroid cancer. Your clinician will screen for these before starting.

Can I combine it with other GLP-1 drugs?

No. Semaglutide should not be combined with tirzepatide, retatrutide, or liraglutide - do not stack two GLP-1 agonists at the same time.

How long does treatment last?

Treatment is ongoing under clinical supervision - it is not a short cycle. Duration is determined at your consult and reassessed regularly depending on your progress and goals.

Related protocols

Want a personalized protocol?

Exact dosing is set with a licensed provider in the PepDepo network. This page is education, not a prescription.

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Education only, not medical advice. Peptides discussed are for informational purposes and many are not FDA-approved. Eligibility, prescribing, compounding, and dispensing are handled by appropriately licensed entities. Exact protocols and dosing are set with a licensed provider in the PepDepo network at consult. Content is pending clinical review.