A plain-language, continually updated guide from Dr. Matt Chalmers’ clinical reference on hormones and peptides.
Semaglutide is a GLP-1 receptor agonist — a lab-made version of a hormone (GLP-1) your intestines already produce naturally after you eat, which signals fullness to your brain and helps regulate blood sugar. Rather than creating an artificial state in your body, Semaglutide amplifies a satiety signal that’s already part of your normal physiology but often isn’t strong enough on its own.
It’s approved under several brand names and forms: Ozempic (type 2 diabetes, 2017), Wegovy (chronic weight management, 2021), Rybelsus (an oral tablet), and as of late 2025/early 2026, an even higher-dose Wegovy HD (7.2 mg) and a 25 mg Wegovy pill. In the large SELECT cardiovascular trial (over 17,000 participants), it also showed a 26% reduction in major cardiac events in adults with established heart disease — a meaningful finding beyond weight management alone.
It’s worth being honest about what Semaglutide is — and isn’t. It doesn’t meaningfully increase how many calories your body burns, and it doesn’t directly improve insulin sensitivity the way some other GLP-1-family medications do. It works almost entirely by reducing how much you eat. That’s exactly why our providers pay close attention to lean muscle mass during treatment — research shows 25–40% of the weight lost on Semaglutide alone can come from muscle rather than fat, which is why adequate protein intake, resistance training, and sometimes complementary hormone or peptide support are built into a well-run protocol rather than treated as optional extras.
Because this pathway reduces food intake, maintaining adequate protein (our reference material recommends 1.2–1.6 g per kg of body weight daily) and overall micronutrient intake — including B12, iron, and zinc — is a genuinely important part of protecting muscle and preventing deficiency while on therapy, not an afterthought.
Semaglutide is FDA-approved for specific indications under brand names such as Ozempic® and Wegovy®. Use outside an approved indication is considered off-label and is determined individually by your provider. One additional note worth flagging honestly: emerging reports link this drug class to anhedonia (a reduced sense of joy or pleasure in daily life) in some patients — something our providers watch for and discuss openly during treatment.
Semaglutide may be included as part of our Metabolic Reset program, which addresses insulin resistance, sleep, and hormones together.
Yes, they can. Weight loss needs to be defined. Losing fat is good; losing muscle is bad. When you use these tools, you need to track your progress and make sure the weight you’re losing is fat, not muscle. If your provider isn’t working on your testosterone, protein intake and exercise, you’re not getting the care I believe you need.
Semaglutide is a GLP-1 only. Tirzepatide is a GLP-1 plus GIP, so they act on the body a little differently. GLP-1 helps insulin function, but its big effect is suppressing hunger so you eat less. GIP does more for insulin function than for appetite, which makes it much better for insulin resistance and related problems. If you can tolerate it, I recommend tirzepatide over semaglutide for most people.
Depending on your body, the most common are nausea, skin tingling, burping, hair loss and loose stools. More serious problems, like pancreatitis, are rare, and the common ones are easy to control. We dose differently than most clinics: we dial in the dose for you specifically, so you stay at a level of nausea you can tolerate. If that is none, that’s fine. If you want to feel it, but just barely, that’s up to you too.
We bring your testosterone up to where it needs to be, and we go through your diet and supplements to make sure you have enough protein and building blocks to keep your muscle. Your body only breaks down muscle tissue when it needs something stored in that muscle. If you are taking in the nutrients your body needs, it won’t damage your muscle.
People regain when they are never taught what to eat and how to eat. It’s not a calorie thing; it’s a chemistry thing. Without that, they go back to the habits that created the fat gain in the first place. We help you change your lifestyle, not just take peptides.
We typically check free and total testosterone, ALT, AST, glucose, insulin, A1C, estrogen, iron and lipids. All of these play a part in keeping you safe and making sure your body ends up better and healthier while on any GLP-1.
Yes. We do a lot of our work by telehealth and can have everything shipped to your door.
This page draws on The Pillars Path: A Root-Cause Guide to Hormones, Peptides, and Metabolic Health by Dr. Matt Chalmers — Pillars of Wellness’ clinical reference on hormone and peptide therapy.
