GLP-1 Weight-Loss Medications: How They Work

GLP-1 weight-loss medications are weekly injections that act like a natural gut hormone called GLP-1. They help you feel full sooner, stay full longer and think about food less, which makes eating less easier. They work best alongside changes to eating and activity, and a provider decides whether they fit you.

At Padgett Medical Center in Tampa, personalized compounded semaglutide starts at $149 a month and personalized compounded tirzepatide at $229 a month at the starting dose. Book online with a card on file and take 15% off your first month of medication, and your $100 visit is free when you start medication. Nothing is charged when you book. See every dose and price.

What does GLP-1 actually do in your body?

GLP-1, short for glucagon-like peptide-1, is a hormone your gut releases after you eat. It signals fullness to your brain, slows how quickly your stomach empties and helps your body release insulin when blood sugar is high.

Medications that act on the GLP-1 receptor amplify those signals. MedlinePlus explains that semaglutide slows the emptying of the stomach and may decrease appetite. Many people describe the effect as quieter 'food noise': less snacking, smaller portions and fewer cravings.

How is tirzepatide different from semaglutide?

Tirzepatide acts on two hormone receptors, GIP and GLP-1, while semaglutide acts on GLP-1 alone. Both are weekly injections used for weight management.

GIP (glucose-dependent insulinotropic polypeptide) is another hormone involved in blood sugar and energy balance. Tirzepatide's prescribing information describes its action on both receptors. At Padgett you can discuss both: personalized compounded semaglutide and personalized compounded tirzepatide. For help choosing, read which GLP-1 is right for you.

Who is a candidate for GLP-1 weight-loss treatment?

Adults with a BMI of 30 or higher, or 27 or higher with a weight-related condition such as high blood pressure or type 2 diabetes, are the usual candidates. Your provider confirms whether treatment fits your health history.

Those thresholds come from NIDDK. BMI is a starting point, not the whole picture: your provider also reviews your medical history, current medications and goals. Not sure where you stand? Try Padgett's BMI calculator before your visit.

Who should not take a GLP-1 medication?

People with a personal or family history of medullary thyroid cancer or multiple endocrine neoplasia type 2 (MEN2), and people who are pregnant, should not take these medications. A history of pancreatitis or serious digestive problems also needs careful review first.

These cautions come from the semaglutide and tirzepatide drug information and tirzepatide's prescribing information. Tell your provider about every medication you take, especially insulin or other diabetes medicines, since combining them can raise the risk of low blood sugar.

What side effects are common?

Nausea, diarrhea, constipation, vomiting and stomach discomfort are the most common side effects. They are usually most noticeable when you start or increase a dose, and for many people they ease over time.

Eating smaller meals, eating slowly and stopping when you feel full help many people. Severe or ongoing stomach pain, repeated vomiting or trouble keeping fluids down needs prompt medical attention. Our GLP-1 side effects guide covers what helps and when to call.

How is the dose set and adjusted?

Your provider starts you at a low dose and increases it gradually, based on how you respond and how you feel. Never change your dose on your own.

Starting low and going slow gives your body time to adjust and helps limit side effects. At Padgett, your dose is personalized and adjusted with your provider at follow-up visits, and you get clear instructions for your exact medication. If your appetite, weight or side effects change, that's the conversation for your next visit.

What happens if you stop taking a GLP-1 medication?

Weight often returns after these medications are stopped, especially if eating and activity habits haven't changed. That's why a good plan includes habits you can keep, not just a prescription.

NIDDK notes that people may regain weight when they stop. Talk with your provider before stopping so you can plan the next step together. For everyday habits that help, read lifestyle habits that support GLP-1 treatment.

How do you start GLP-1 treatment at Padgett?

Book a visit online, in person at our Tampa clinic or by telehealth anywhere in Florida. Every visit is with Morgan Colee, PA, who reviews your health and builds your plan with you.

Our clinic is at 6904 W. Linebaugh Ave, Tampa, FL 33625. For telehealth, you need to be in Florida at the time of the visit and show a valid Florida driver's license or ID on camera. Want to ask questions first? You can pick a free 15-minute phone consultation with our medical staff when you book.

Ready to see if a GLP-1 plan fits you? Book your visit.

Personalized compounded semaglutide and personalized compounded tirzepatide are compounded drugs that have not been approved by the FDA. They have not been reviewed by the FDA for safety, effectiveness, or quality. FDA-approved products containing semaglutide and tirzepatide are available. Individual results vary.

This article is educational and is not medical advice. Talk with a licensed provider about your own health, medications and treatment options.