The first question almost every weight-loss patient asks me is “which one should I be on?” They’ve usually heard about these medications from a friend or on TikTok. Here’s the honest answer: both work, but they’re not equals. The large majority of my patients are on tirzepatide, and for most people, it’s the better tool.
Let me explain why — and why semaglutide still has its place.
They’re cousins, not twins
Both are GLP-1 receptor agonists — they mimic a hormone your gut releases naturally, slowing digestion and quieting the food noise that makes sustainable change so hard. Both are weekly self-injections, both require dose escalation over the first couple of months, and at Franco Aesthetics both are prescribed through regulated 503A compounding pharmacies after a full medical history and current labs. This is a clinical program, not a vitamin shop.
The difference is how many switches they flip — and that’s where tirzepatide pulls ahead.
Why tirzepatide is my go-to
Semaglutide acts on one receptor (GLP-1). Tirzepatide acts on two (GIP and GLP-1). That second mechanism isn’t a marketing detail — it shows up on the scale. In head-to-head data, semaglutide patients averaged about 12–15% body-weight reduction; tirzepatide patients averaged closer to 17–22%, with a real share crossing 20%.
It’s not just the numbers. In my own practice, most patients tolerate tirzepatide better day to day — less of the nausea and stomach trouble people worry about. More weight loss and an easier ride is why it’s become far and away the medication I prescribe most.
So when do I still reach for semaglutide?
Semaglutide is a genuinely good medication — it’s just the right fit for a narrower group. First-timers with a smaller goal (under 30 pounds, never on a GLP-1) can start gentle on it. Budget matters too — tirzepatide costs more, and for some people that’s the deciding factor. And a few people simply do better on it. But for most people with a real weight-loss goal, tirzepatide is where I start.
The plan isn’t permanent
Here’s what people don’t expect: you’re not locked in. We adjust your dose every month based on how you respond, and if semaglutide stalls or tirzepatide isn’t sitting right, we can switch you mid-program. The medication is a tool. The plan is yours, and it flexes.
What I won’t do
I won’t prescribe either one off a quick online form and call it medicine. Every patient starts with a full medical history, current labs, and an honest conversation about what these medications can and can’t do. The injection is the easy part — the oversight (checking your labs, managing your dose, protecting your muscle while you lose fat) is what makes it safe.
That’s also why I can’t tell you in a blog post which one is right for you. I can tell you tirzepatide is what most of my patients use and usually the stronger option — but the actual call comes from your history, your goals, and your bloodwork. That’s what we’d sort out together at your consultation.
The bottom line
Semaglutide is good. Tirzepatide is, for most people, better — more weight loss, often easier to tolerate, and far and away what I prescribe most. Neither is a shortcut around protein, movement, and sleep, and both work best with a provider who’s actually watching your numbers.
If you’ve been trying to decide, don’t do it off a chart. Come see me. We’ll look at your labs together and build the plan around you. Learn more about our medical weight loss program in Norman, or book a consultation to get started.
— Heather Franco, APRN, FNP-C
