The Full Comparison
Semaglutide
GLP-1 Receptor Agonist
Mimics the GLP-1 hormone, which regulates appetite and blood sugar by slowing stomach emptying, reducing hunger signals, and influencing the brain's reward pathways associated with food.
Ozempic (diabetes) · Wegovy (weight loss)
12–15% of body weight (STEP clinical trials)
Weekly subcutaneous injection · titrated from 0.25 mg up to 2.4 mg (Wegovy) or 2 mg (Ozempic)
Nausea, diarrhea, vomiting, constipation, fatigue — most common during dose escalation
Available through licensed compounding pharmacies — significantly lower cost than brand name
Tirzepatide
Dual GLP-1 + GIP Receptor Agonist
Mimics both GLP-1 and GIP hormones simultaneously. The addition of GIP receptor activation may amplify metabolic effects and explain the higher average weight loss seen in clinical trials compared to semaglutide alone.
Mounjaro (diabetes) · Zepbound (weight loss)
15–22% of body weight (SURMOUNT clinical trials)
Weekly subcutaneous injection · titrated from 2.5 mg up to 15 mg
Nausea, diarrhea, vomiting, constipation — may be more pronounced initially due to dual mechanism
Available through licensed compounding pharmacies — significantly lower cost than brand name
Side-by-Side at a Glance
| Factor | Semaglutide | Tirzepatide |
|---|---|---|
| Mechanism | GLP-1 only | GLP-1 + GIP |
| Avg. weight loss | 12–15% | 15–22% |
| Injection frequency | Weekly | Weekly |
| FDA weight loss approval | Wegovy | Zepbound |
| Food noise reduction | Significant | Significant |
| Compounded available | Yes | Yes |
| Brand name cost (est.) | $1,000–$1,500/mo | $1,000–$1,500/mo |
| GI side effects | Common | Common (may be more initial) |
| Long-term data | More established | Growing (newer drug) |
Which Should You Choose?
There is no universal answer — the right medication depends on your health history, how your body responds, and what your provider recommends after a clinical evaluation. That said, here are the general considerations:
Consider Semaglutide If:
- You have previously tolerated GLP-1 medications well
- You prefer a medication with more long-term clinical data
- Your provider recommends it based on your health history
- Tirzepatide is unavailable through your pharmacy
Consider Tirzepatide If:
- You are looking for the highest average weight loss results
- You have not responded adequately to semaglutide
- Your provider determines the dual mechanism may benefit your metabolic profile
- You are comfortable with a newer medication with growing safety data
Important: Both medications require a prescription from a licensed provider. South Florida Trim Clinic's providers evaluate every patient individually before making any recommendation. Book a free consultation to discuss which option may be right for you.
Frequently Asked Questions
Which is more effective — semaglutide or tirzepatide?
Clinical trials show tirzepatide generally produces greater average weight loss — approximately 15–22% of body weight versus 12–15% for semaglutide. However, individual results vary significantly, and some patients respond better to semaglutide. A licensed provider can help evaluate which option may be more appropriate for your health history.
What is the difference between semaglutide and tirzepatide?
Semaglutide is a GLP-1 receptor agonist — it mimics the GLP-1 hormone that regulates appetite and blood sugar. Tirzepatide is a dual GLP-1 and GIP agonist — it targets both GLP-1 and GIP hormone receptors, which may explain its stronger average weight loss results in clinical trials.
Which medication has fewer side effects?
Both medications share similar GI side effects: nausea, diarrhea, constipation, and vomiting, especially when starting or increasing doses. Tirzepatide may cause more GI side effects initially due to its dual mechanism. Side effects typically diminish over time with proper dose titration managed by your provider.
Can I switch from semaglutide to tirzepatide?
Yes, under medical supervision. A licensed provider would evaluate your health history, your response to current medication, and help determine if switching is medically appropriate for you.
Which medication does South Florida Trim Clinic prescribe?
South Florida Trim Clinic's licensed providers prescribe both semaglutide and tirzepatide when clinically appropriate. Your provider determines the right option based on your individual health history, goals, and eligibility.
Are semaglutide and tirzepatide available as compounded medications?
Yes. Both are available as compounded medications from licensed compounding pharmacies. Compounded versions are not FDA-approved but are significantly less expensive than brand-name versions. Your provider will discuss the differences with you.
Get the Right Medication for You
A licensed provider will review your health history and help you determine which medication — and which program — is the best fit.