The Two Leading GLP-1 Weight Loss Medications
Semaglutide (Wegovy) and tirzepatide (Zepbound) are the two most widely prescribed injectable weight-loss medications in the United States. Both are highly effective — but they are structurally different drugs with different trial results, side-effect profiles, and costs. Here is what you actually need to know when comparing them with a provider in Boca Raton. Most of the enquiries we get from people around Boca Raton, FL come in about get semaglutide prescription, and this page sets out how that work runs from the first call through to completion.
How each medication works
Semaglutide (Wegovy) is a GLP-1 receptor agonist. It mimics the GLP-1 hormone your body produces after eating, which slows gastric emptying, reduces appetite signals, and helps regulate blood sugar. It targets one pathway.
Tirzepatide (Zepbound) is a dual agonist — it activates both GLP-1 and GIP receptors. The additional GIP pathway is believed to contribute to its larger average weight loss in clinical trials. Both medications require weekly self-injection with a prefilled pen, starting at a low dose and escalating gradually under medical supervision.
What the clinical trials show
| Metric (trial data) | Semaglutide (STEP trials) | Tirzepatide (SURMOUNT trials) |
|---|---|---|
| Average weight loss at ~72 weeks | ~15% of body weight | ~20–22% of body weight |
| Patients losing 20%+ | ~32% | ~57% |
| Patients losing 5%+ | ~86% | ~90%+ |
| FDA approval (weight loss) | 2021 (Wegovy) | 2023 (Zepbound) |
| Dosing | Weekly injection, 2.4 mg maintenance | Weekly injection, 15 mg max dose |
These are group averages from registration trials — individual results vary widely based on adherence, lifestyle changes, and how your body responds. Trial results are not a guarantee of your outcome, and your provider should discuss realistic expectations for your situation.
Side effects: how they compare
Both medications share the same class of common side effects, mostly gastrointestinal: nausea, vomiting, diarrhea, constipation, and abdominal discomfort. These are most common during dose escalation and usually improve over time. Both also carry a boxed warning about thyroid C-cell tumors (seen in rodent studies), and both require discussion of gallbladder, pancreatitis, and hypoglycemia risks — especially if combined with other diabetes medications.
The practical difference: tirzepatide's higher efficacy comes with a somewhat higher rate of GI side effects in trials, while semaglutide's more gradual dose schedule is often easier for people sensitive to nausea. This is exactly the kind of trade-off to discuss with a clinician who knows your history.
Cost and insurance coverage
Both medications list for roughly 1,300–1,400 per month without insurance, and both manufacturers offer savings-card programs for commercially insured patients. Insurance coverage varies by plan — some cover one drug and not the other, some require prior authorization, and some require a trial of one before approving a switch. In Boca Raton, coverage for GLP-1 weight-loss drugs is common but far from universal, so confirming coverage before starting is essential. Ask the pharmacy benefit on your plan and what the out-of-pocket cost would be at maintenance dose.
Which one might be right for you
There is no universal "better" drug — the right choice depends on your medical history, how you tolerate side effects, your insurance coverage, and your goals. Some general observations from the data: people seeking the largest possible average loss may discuss tirzepatide; people with significant nausea sensitivity may find semaglutide's gentler titration easier to tolerate; and your plan's formulary may make the decision for you. A qualified healthcare professional can evaluate your medical history, current medications, and coverage to discuss which option — if either — may be appropriate for you.
What to ask a provider in Boca Raton
- Which of these medications have you prescribed most, and what do your patients typically experience?
- Is my insurance likely to cover either one, and what would my out-of-pocket cost be?
- How do we manage side effects during dose escalation?
- What happens if I stop — how is the transition handled?
- How do you monitor labs and follow up during treatment?
The bottom line
Both semaglutide and tirzepatide are proven, physician-supervised tools — not magic. They work best alongside nutrition guidance, activity, and follow-up, and the decision between them belongs in a conversation with a qualified provider who knows your health history.

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