The short answer
GLP-1 medications mimic a hormone your gut already makes, one your body uses to say “you have eaten, settle down.” On the medication, appetite quiets, the stomach empties more slowly, and blood sugar regulation improves. The effect patients actually describe is simpler than the pharmacology: the constant background chatter about food finally turns down, and the eating changes that drive weight loss stop requiring heroic willpower.
That is why these medications work when so many diets have not. It is also not the whole story, and the rest of this page covers what else matters.
The medications, one by one
Semaglutide is the active medication inside the brand names Ozempic and Wegovy, which are the same molecule at different doses and FDA labels. It targets the GLP-1 pathway alone.
Tirzepatide, the medication inside Mounjaro and Zepbound, targets GLP-1 plus a second gut-hormone pathway called GIP. In the first head-to-head trial (SURMOUNT-5), average weight loss favored tirzepatide, 20.2 percent versus 13.7 percent at 72 weeks, and it also behaves differently from person to person. Averages are not individuals; the fit depends on your history, your response, and your tolerance, which is a prescriber conversation.
What “compounded” means. Compounded semaglutide or tirzepatide is the same active molecule prepared by a compounding pharmacy rather than sold under the brand label, which is what makes cash-pay programs affordable. The catch: quality depends entirely on the pharmacy. Ask any provider, including us, where their medication comes from and what testing stands behind it. A good program answers without flinching.
Side effects, including two worth planning for
The common ones are nausea, constipation, and fatigue, mostly early and mostly dose-related, which is why dosing here is titrated gradually under supervision.
Two effects deserve more attention than they get. Rapid weight loss, from any cause, can trigger temporary hair shedding, a stress response of the hair cycle that our hair loss page explains in detail. And without enough protein and resistance work, a meaningful share of lost weight can be muscle rather than fat, which undermines the metabolic result you came for. Both are manageable with pacing, protein, and monitoring, and both are things our program watches for.
Why the workup behind it matters
Weight is an output. The inputs, insulin resistance, thyroid function, cortisol patterns, sleep, and medications, decide how hard the weight is to move and how likely it is to return. Insulin resistance in particular can sit invisibly for years, because it shows on insulin-resistance markers long before glucose goes abnormal, and those markers are checked when the picture calls for them.
That workup is what turns a prescription into metabolic care. It is also how a prescriber knows whether a GLP-1 is even the right tool for you, or whether the right first move is fixing a thyroid or sleep problem the scale was reporting secondhand. Our metabolic health page walks those inputs one by one.
What a supervised program looks like
A supervised program looks like this: labs before medication, a full intake evaluation, dose titration matched to your response, side-effect management before side effects cost you the result, protein and muscle protection built into the plan, and an exit strategy, because the goal is a body that maintains its result.
That is how our medical weight loss program is built, and program details and pricing live on that page. If you are weighing a GLP-1 decision, start with the free consultation and bring every question you have.
Heard about retatrutide? It is a separate, still-investigational medication, and it has its own page: retatrutide.