Medical Weight Loss in Gilbert, AZ

Semaglutide, Tirzepatide, and Retatrutide are prescription medications that belong to a class of drugs known as GLP-1 receptor agonists. They work by mimicking hormones your body naturally produces to regulate appetite, blood sugar, and digestion. Each medication targets slightly different pathways:

1. Semaglutide activates the GLP-1 receptor to reduce appetite, quiet food noise, and improve blood sugar control.
2. Tirzepatide activates both GLP-1 and GIP receptors, offering stronger appetite control and enhanced metabolic support.
3. Retatrutide is a next-generation triple agonist that activates GLP-1, GIP, and glucagon receptors, helping reduce appetite while also increasing your body’s energy expenditure.

At Onyx Integrative Medicine & Aesthetics in Gilbert, AZ, our naturopathic doctors help determine which option is the best match for your body, goals, and health history.

All three medications, Semaglutide, Tirzepatide, and Retatrutide, are given as subcutaneous injections, typically once per week. Most patients self-administer at home after our team walks them through the process during their first visit. The injection itself uses a very small needle and is taken in the abdomen, thigh, or upper arm. Dosing is started low and adjusted gradually based on how your body responds, which is why ongoing check-ins with our team matter throughout your program.

We offer telemedicine appointments for patients across Arizona and nationwide, and your GLP-1 medication is shipped directly to your home from our FDA-registered compounding pharmacy.

GLP-1 medications are among the most effective weight loss tools currently available, and results vary depending on the medication used, your starting point, and how the medication is paired with nutrition and lifestyle changes. In our experience, patients tend to see steady, sustained progress when GLP-1 therapy is combined with proper labs, physician oversight, and a realistic nutrition plan, not as a standalone shortcut. Tirzepatide and Retatrutide generally offer stronger results than Semaglutide alone because of how they target multiple metabolic pathways, but the “best” medication is the one that fits your specific body and goals. That match is what we work out during your consultation.

The most common side effects across Semaglutide, Tirzepatide, and Retatrutide are gastrointestinal, nausea, mild stomach discomfort, constipation, or occasional diarrhea, and they’re typically most noticeable in the first few weeks of treatment or when the dose is increased. For most patients, these side effects ease over time as the body adjusts. More serious side effects are uncommon but possible, which is why every patient at Onyx is medically supervised throughout treatment. We adjust dosing carefully, monitor labs, and address any issues directly so you’re never managing this on your own. If you have a history of pancreatitis, thyroid concerns, or certain other medical conditions, we’ll go over whether GLP-1 medication is the right fit for you during your consultation.

Results vary patient by patient, and that’s not a copout, it’s the honest answer. Weight loss outcomes depend on which medication you’re on, your starting weight, and how consistently you’re paired with nutrition and lifestyle changes. What we can tell you is that the patients who do best with GLP-1 medication, whether they see us in our Gilbert clinic or through telemedicine, are the ones who treat it as one part of a complete program, not a magic bullet. We track your progress with regular check-ins, adjust dosing as needed, and address the other pieces (nutrition, sleep, stress) that quietly influence the result. Your consultation is where we map out what realistic progress looks like for your specific situation.