
Semaglutide put GLP-1 medications on the map, and it remains one of the most requested treatments at Contour Medical Clinic's medical weight loss program in Tarzana. But the semaglutide conversation has changed quickly. Novo Nordisk's oral Wegovy pill received FDA approval in December 2025 and reached pharmacies broadly in January 2026, giving patients a needle-free option for the first time. Between Ozempic, Wegovy, Rybelsus, and now the new 25 mg oral tablet, it is easy to lose track of what is actually approved for what, how well each option works, and what physician supervision should look like. Here is a clear, medically grounded breakdown of what semaglutide is, how it compares to tirzepatide, and what a real treatment plan involves at a Tarzana clinic.
Semaglutide is a synthetic version of GLP-1 (glucagon-like peptide-1), a hormone your gut naturally releases after eating. It slows gastric emptying, signals fullness to the brain, and helps regulate blood sugar. Pharmaceutical-grade semaglutide amplifies and extends that signal, which is why patients on it typically eat less without feeling like they are fighting hunger all day.
The same active ingredient is sold under several brand names, each approved for a different purpose:
The biggest semaglutide development in recent memory is the FDA approval of oral Wegovy, the first GLP-1 pill approved specifically for weight loss. In the OASIS-4 clinical trial, patients who adhered to treatment lost an average of 16.6% of their body weight on the 25 mg daily pill, with serious adverse events occurring less often than in the placebo group. For patients who want the metabolic benefits of semaglutide without a weekly injection, this is a meaningful new option, and one our physicians can now discuss alongside injectable Wegovy when building a treatment plan.
It's worth noting the oral pill is not the same product as Rybelsus. Rybelsus is a lower-dose tablet approved for diabetes control, while the new oral Wegovy is formulated and dosed specifically for weight management.
Across the STEP clinical trial program, adults without diabetes taking semaglutide 2.4 mg weekly lost an average of 12–15% of body weight over 68 weeks, compared to 2–3% with placebo. Longer-term data from the SELECT trial followed patients for up to four years and found weight loss was largely sustained, with an average 9.4–10.2% reduction in body weight maintained versus a 1.5% change in the placebo group.
Results vary by individual, adherence, dose, and whether semaglutide is paired with structured nutrition and activity guidance, which is why our program pairs medication with regular check-ins and objective tracking through body composition analysis rather than the scale alone.
Semaglutide's benefits extend beyond the number on the scale. The SELECT cardiovascular outcomes trial followed over 17,600 adults with overweight or obesity and existing cardiovascular disease, but without diabetes. Patients taking semaglutide had a 20% reduction in major adverse cardiovascular events (heart attack, stroke, and cardiovascular death) compared to placebo. Researchers estimate roughly a third of that benefit is explained by reduced waist circumference, suggesting semaglutide's cardioprotective effect goes beyond weight loss alone. This is part of why physicians increasingly view GLP-1 therapy as a metabolic and cardiovascular intervention, not just a weight-loss tool.
Semaglutide is always started at a low dose and titrated upward gradually to minimize gastrointestinal side effects. A typical injectable schedule looks like this:
The oral pill follows a similar step-up pattern at lower starting doses before reaching the 25 mg maintenance tablet. At Contour Medical Clinic, dosing is never handed over as a one-size-fits-all schedule. Physicians review baseline labs, adjust titration speed based on side effects, and reassess progress at regular intervals using follow-up lab testing and body composition scans.
The most common side effects are gastrointestinal and tend to be dose-dependent, appearing most noticeably after a dose increase:
Most GI side effects ease within a few weeks as the body adjusts. Less common but more serious risks include pancreatitis, gallbladder disease, kidney injury related to dehydration, and gastroparesis. Semaglutide is contraindicated for patients with a personal or family history of medullary thyroid carcinoma or Multiple Endocrine Neoplasia syndrome type 2, and it is not appropriate during pregnancy. This is precisely why semaglutide should be prescribed and monitored by a physician who reviews your full medical history rather than obtained without evaluation — a concern that has grown as unregulated compounded versions have circulated outside legitimate pharmacies.
Patients frequently ask how semaglutide compares to tirzepatide, the dual GLP-1/GIP medication sold as Zepbound and Mounjaro. In head-to-head data, tirzepatide has produced greater average weight loss than semaglutide, largely because it acts on two hormone pathways instead of one. That doesn't make it the automatic right choice for every patient. Semaglutide currently has the longest track record and the strongest cardiovascular outcomes data of any GLP-1 medication, plus the new oral option for patients who prefer not to inject. Tirzepatide may be preferred when a patient needs a larger magnitude of weight loss or has not responded adequately to semaglutide. The right medication depends on your health history, prior response to treatment, and goals — which is exactly what a physician consultation is for.
Semaglutide for weight management is generally appropriate for adults with a BMI of 30 or higher, or a BMI of 27 or higher with a weight-related condition such as high blood pressure, type 2 diabetes, sleep apnea, or high cholesterol. Candidacy is confirmed through a physician evaluation that includes a full medical history, current medications, and baseline labs — not a questionnaire alone.
Semaglutide treatment at our Tarzana clinic starts with a physician consultation and baseline labs, not a prescription on demand. From there, patients follow a structured titration schedule with scheduled check-ins to track side effects, weight trends, and lab markers. Many patients pair their program with InBody composition scans to track fat loss versus muscle preservation, and some incorporate recovery-focused sessions in our Wellness Lounge — infrared sauna, cold plunge, and contrast therapy — to support energy and recovery while adjusting to treatment. For patients further along in their care, our longevity medicine program offers additional tools for metabolic and hormonal optimization once weight-loss goals are met. You can read more about how the broader program is structured in our guide to medical weight loss in Tarzana.
Clinical trial participants without diabetes lost an average of 12–15% of body weight over roughly 68 weeks on the 2.4 mg injectable dose, with results varying based on adherence, starting weight, and lifestyle factors. Long-term follow-up data shows weight loss can be sustained for years with continued treatment.
Weight regain is common after stopping GLP-1 medications, since appetite regulation returns closer to baseline once the medication clears the body. This is why treatment plans should include a long-term maintenance strategy and nutrition guidance from the start, not just a prescription.
In its pivotal trial, the 25 mg oral pill produced strong results (16.6% average weight loss with consistent adherence), though head-to-head long-term comparisons with the injectable are still developing. Some patients respond better to one formulation than the other, which is part of why dosing decisions should be individualized.
Compounded semaglutide is not FDA-approved and has been linked to dosing errors and product quality concerns in various regions. Physician-supervised treatment with pharmacy-dispensed, FDA-approved semaglutide allows for accurate dosing, monitoring, and rapid response if side effects occur.
Coverage varies widely by plan and employer. Our team can help you understand self-pay options and current program pricing during your consultation.
Semaglutide can be a genuinely effective tool for weight loss and long-term metabolic health, but it works best as part of a supervised program rather than a standalone injection. If you're in Tarzana, Encino, Woodland Hills, Sherman Oaks, or the surrounding San Fernando Valley and want to know whether semaglutide, tirzepatide, or another approach fits your health history and goals, schedule a free consultation with Contour Medical Clinic. We'll review your labs, your goals, and build a plan that's actually monitored — not just prescribed.