Semaglutide has become one of the most talked-about medications in weight loss — and for good reason. Clinical trials have shown patients losing 15–20% of their body weight, and the results have been consistent enough that the FDA approved it specifically for chronic weight management.
But semaglutide isn't magic, and it's not right for everyone. Here's what you should know before starting — and why physician-supervised care makes the difference.
What Is Semaglutide?
Semaglutide is a GLP-1 receptor agonist — a medication that mimics a hormone your body naturally produces when you eat. GLP-1 (glucagon-like peptide-1) does several things:
- Signals fullness — tells your brain you're satisfied sooner
- Slows gastric emptying — food stays in your stomach longer, reducing appetite between meals
- Stabilizes blood sugar — reduces insulin spikes and crashes that drive cravings
- Reduces food noise — that constant background chatter about what to eat next quiets down
Originally developed for type 2 diabetes (as Ozempic), semaglutide was later approved for weight management (as Wegovy) after trials showed dramatic weight loss in non-diabetic patients.
What the Clinical Data Shows
The numbers from semaglutide trials are unusually strong for a weight loss medication:
- Average weight loss of 1–3 lbs per week
- Over 50% of participants lost at least 15% of body weight
- Significant reduction in cardiovascular risk factors including blood pressure, cholesterol, and HbA1c
- Benefits sustained as long as treatment continued with lifestyle support
These results are far beyond what diet and exercise alone typically produce — especially for patients with metabolic dysfunction, insulin resistance, or hormonal imbalances.
Who Is a Good Candidate?
Semaglutide is typically appropriate for adults who meet one or more of these criteria:
- BMI of 30 or higher (obesity)
- BMI of 27+ with at least one weight-related health condition (high blood pressure, type 2 diabetes, high cholesterol)
- History of failed weight loss attempts with diet and exercise alone
- No history of medullary thyroid cancer or MEN2 syndrome
Dr. Jaqua evaluates every patient individually — including a full metabolic lab panel — before prescribing. This isn't a one-size-fits-all program.
Semaglutide vs. Tirzepatide: What's the Difference?
Tirzepatide (Mounjaro/Zepbound) is a newer medication that targets both GLP-1 and GIP receptors. In head-to-head studies, tirzepatide has shown slightly greater average weight loss than semaglutide — but both are highly effective.
The right choice depends on your health history, how your body responds, and your goals. At Vitality, Dr. Jaqua offers both and will recommend the best fit based on your labs and medical history.
What to Expect: Side Effects
The most common side effect is nausea, particularly in the first few weeks as your body adjusts. This is why dosing starts low and increases gradually — a process that should be managed by a physician, not a prescription app.
Other potential side effects include:
- Mild GI discomfort (constipation, diarrhea)
- Reduced appetite (this is the intended effect, but it needs to be monitored)
- Fatigue during the initial adjustment period
At Vitality, dosing adjustments are made at every check-in based on how you're feeling — not a pre-set escalation schedule.
Why Physician-Supervised Matters
Telehealth apps and pharmacy programs can prescribe semaglutide — but they typically don't draw labs, assess your metabolic health, or adjust your dosing based on how you're responding in person.
At Vitality, your weight loss program includes:
- On-site metabolic labs with results in minutes
- Physician-managed dosing — adjusted based on your response, not a calendar
- Nutritional guidance and lifestyle coaching
- Access to lipotropic injections, B12, and IV therapy to support your results
- Regular in-person check-ins with Dr. Jaqua
The Bottom Line
Semaglutide is one of the most effective weight loss tools available today — but it works best under physician supervision with proper lab work, dosing management, and lifestyle support. If you're in Boerne or San Antonio and you're ready to stop fighting your metabolism, this is where to start.