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See all conditionsHome / Medical Weight Loss / Tirzepatide
Medical Weight Loss
Tirzepatide in
Gilbert, AZ
Lose weight with personalized tirzepatide treatment prescribed and monitored by licensed naturopathic doctors. Your plan is tailored to your health history, lab results, goals, and response to treatment, with ongoing medical support at every step.
★★★★★
5.0 · 213 Google reviews
Medically reviewed by
Dr. Kasey Nichols, NMD
Serving
Gilbert & the East Valley
What is tirzepatide?
Tirzepatide is a prescription medication used for weight management, given as a once-weekly injection under the skin. It works by activating two hormone receptors involved in appetite, food intake and blood sugar regulation: GLP-1 and GIP.
Mounjaro and Zepbound both contain tirzepatide as their active ingredient. Mounjaro is FDA-approved to improve blood sugar control in adults with type 2 diabetes. Zepbound is FDA-approved for chronic weight management in eligible adults and for moderate-to-severe obstructive sleep apnea in adults with obesity.
At Onyx, tirzepatide injections in Gilbert, AZ are one part of our medical weight loss program, with treatment prescribed and monitored by licensed naturopathic doctors.
How does tirzepatide work for weight loss?
After you eat, your body releases hormones that influence appetite, digestion and blood sugar regulation. Tirzepatide activates receptors for two of these hormones, GLP-1 and GIP, helping strengthen signals involved in fullness and appetite control.
For many patients, this means feeling hungry less often, getting full sooner and finding it easier to maintain smaller portions. Tirzepatide for weight loss works best as part of a broader treatment plan that also addresses nutrition, physical activity and muscle preservation.
Less hunger
Tirzepatide can reduce appetite and food intake. Some patients also notice that food occupies less of their attention throughout the day.
Full for longer
Tirzepatide slows stomach emptying, which can contribute to feeling satisfied for longer after eating. This effect can also make large or high-fat meals harder to tolerate, particularly after a dose increase.
Changes in blood sugar regulation
Tirzepatide improves glucose-dependent insulin secretion and reduces glucagon secretion. These effects help regulate blood sugar and may also contribute to changes in hunger and food intake.
Tirzepatide Prescribed With a Personalized Medical Plan
A lot of tirzepatide is being sold right now as a subscription: an online form, a flat monthly fee, a pen in the mail. That can work for some people. At Onyx, tirzepatide is prescribed and monitored by a licensed doctor as part of an actual medical plan, because a form doesn't tell you why your weight isn't moving. Your labs and your history do.
| What is included | With Onyx | A typical online-only subscription |
|---|---|---|
| Evaluation | With OnyxFull history and exam with a licensed doctor | A typical online-only subscriptionAn online intake form |
| Labs | With OnyxReviewed where clinically appropriate: thyroid, blood sugar, hormones | A typical online-only subscriptionRarely required |
| Dosing | With OnyxPersonalized, adjusted at follow-up visits | A typical online-only subscriptionFixed schedule for everyone |
| Support | With OnyxNutrition and strength-training guidance built into your plan | A typical online-only subscriptionMedication only |
| Follow-up | With OnyxRegular visits with your doctor, in-person or by telemedicine | A typical online-only subscriptionAsynchronous messaging, if any |
| Options | With OnyxBoth tirzepatide and semaglutide available | A typical online-only subscriptionUsually one medication only |
Who is a candidate for tirzepatide?
Tirzepatide is FDA approved for weight management at specific BMI thresholds, but that is not the only reason it is prescribed. Your doctor decides at your first visit, after reviewing your health history and, where clinically appropriate, lab work.
Your BMI
The FDA approved indication is a BMI of 30 or higher, or 27 or higher alongside a weight related condition such as sleep apnea or type 2 diabetes.
Progress has stalled
You have made real changes to how you eat and move and the weight has not followed. A plateau is usually a signal, not a willpower problem.
A weekly injection
You are comfortable giving yourself a weekly injection at home. We show you how at your first visit, and most people find it takes about a minute.
Regular follow up
You are able to attend follow up visits. Your dose is adjusted to how you respond, and refills are tied to those appointments rather than automatic.
Other reasons tirzepatide may be considered
Hormonal and metabolic drivers
- Weight gain through perimenopause or menopause, where hormonal change rather than habit is driving it.
- PCOS, also called PMOS, where insulin resistance is part of the picture.
- Insulin resistance or prediabetes identified on lab work.
Off label, discussed case by case
- Support for inflammation, which some patients pursue alongside chronic pain, an autoimmune condition or endometriosis.
- Reduced alcohol cravings, reported by some patients and now an active area of research.
Research into the effects of GLP-1 and GIP medications on inflammation, and on alcohol cravings, is still developing. These uses are off label, meaning they fall outside the FDA approved indication. Off-label prescribing is lawful and common in medicine, but it is a clinical judgement made for one patient rather than a promise of benefit. Your doctor will explain what is known and what is not before prescribing for any of these reasons.
How much weight can you lose with tirzepatide?
These are average results from published clinical trials, not a prediction for any one person. Individual results vary.
20.9%
Trial average body weight reduction on the highest dose over 72 weeks.
SURMOUNT-1, New England Journal of Medicine, 2022
15.0%
Trial average on the lowest maintenance dose in the same study.
SURMOUNT-1, New England Journal of Medicine, 2022
20.2%
Trial average for tirzepatide head to head, where semaglutide averaged 13.7%.
SURMOUNT-5, New England Journal of Medicine, 2025
How long does tirzepatide take to work?
There is no single timeline that applies to everyone. Some patients notice changes in appetite within the first few weeks, while meaningful weight loss can take longer. Your response depends on factors including your starting weight, dose, nutrition, activity level, health history and how your body tolerates treatment.
01
Weeks 1 to 4
Getting started
Some patients notice reduced hunger during the first few weeks. Some also report less water retention and puffiness in this period, which is often described as feeling less inflamed. The timing and degree of these changes vary. The initial dose is designed primarily to help your body adjust to treatment.
02
Weeks 4 to 12
Early progress
Weight changes may become more noticeable as treatment progresses. If you are tolerating tirzepatide well, your doctor may increase the dose according to the prescribed titration schedule.
03
Months 3 to 9
Building momentum
For many patients, this is a period of continued weight loss as the dose, nutrition and activity plan are adjusted around your response. Follow-up visits help your doctor monitor progress and side effects.
04
Ongoing
Long-term management
Weight management is an ongoing process. Your doctor continues to evaluate your response, medication needs and overall health. Refills require a follow-up appointment, so treatment remains medically monitored for as long as you continue.
Tirzepatide dosage and titration
Tirzepatide is started at a low dose and increased gradually to help your body adjust and reduce the likelihood of side effects. The schedule below reflects the FDA-approved starting and titration framework for Zepbound. Your doctor determines your actual dosing schedule based on your response, tolerability and clinical circumstances.
Weeks 1 to 4
2.5 mg weekly
The recommended starting dose. It is there to let your body adjust to the medicine, and is not intended to drive weight loss on its own.
Weeks 5 to 8
5 mg weekly
After at least four weeks at 2.5 mg, the dose may step up to 5 mg weekly if you are tolerating it well. Some patients stay at this dose.
Month 3 onward
Dose increases
If more is needed and the medicine is well tolerated, the dose can rise in 2.5 mg steps, no sooner than every four weeks at the current dose.
Ongoing
Maintenance
The label's maintenance doses are 5 mg, 10 mg and 15 mg weekly. At Onyx many patients maintain below that, commonly 1 mg to 3 mg weekly.
Low-dose and microdosing
Not every patient is working toward the highest tolerated dose. Onyx also prescribes tirzepatide at low doses, often starting at 1 mg or 1.5 mg weekly, for long term maintenance and for patients using it to support inflammation, PCOS or PMOS, an autoimmune condition or endometriosis.
These doses sit below the titration schedule on the label and are prescribed off label, adjusted to your response rather than to a fixed protocol. Your doctor will go through what that means for you.
What are the side effects of tirzepatide?
Most side effects are digestive. They tend to appear in the days after a dose increase and ease as your body adjusts. Many patients have only mild side effects, or none at all, which we think reflects dosing to the individual rather than running everyone through the same protocol. Patients who found semaglutide difficult to tolerate often report an easier time on tirzepatide, though this varies and cannot be predicted in advance.
What to expect
Common side effects
- Nausea
- Diarrhea or constipation
- Vomiting
- Stomach pain
- Reduced appetite and tiredness
Contact us
Call the clinic if you have
- Severe or lasting stomach pain
- Vomiting that will not stop
- Signs of dehydration
- Symptoms of low blood sugar, particularly if you also take insulin or a sulfonylurea
Less common risks
Pancreatitis, gallbladder problems, kidney injury from dehydration and changes in vision in people with diabetic retinopathy are uncommon but possible. Your doctor reviews your history for these before prescribing.
Tirzepatide on its own rarely causes low blood sugar. The risk is higher if you also take insulin or a sulfonylurea, and those doses may need to be reduced when tirzepatide is started. Tell your doctor about every medication you take.
Who should not take tirzepatide
Tirzepatide is not prescribed if
- You or a family member has had medullary thyroid carcinoma, or you have Multiple Endocrine Neoplasia syndrome type 2.
- You have had a serious allergic reaction to tirzepatide or to any of its ingredients.
- You are pregnant. Tirzepatide is not recommended during pregnancy, and treatment is stopped once a pregnancy is recognized.
- You are already taking another tirzepatide product or another GLP-1 medication. These are not combined.
Tell your doctor before starting
- If you take an oral hormonal contraceptive. The labeling advises switching to a non-oral method, or adding a barrier method, for four weeks after starting tirzepatide and for four weeks after each dose increase.
- If you are breastfeeding or planning a pregnancy.
- If you have a history of pancreatitis, gallbladder disease, severe digestive problems or delayed stomach emptying.
- If you have kidney problems or diabetic retinopathy.
- About every medication and supplement you take, and about any planned surgery or procedure involving anesthesia.
This is a summary rather than the full prescribing information. Your doctor reviews your health history and your current medications before prescribing, and will go through the full information with you.
What to eat while taking tirzepatide
You will likely be eating less, so what you eat matters more. A few habits make treatment easier to tolerate.
- Protein
Protein first
Include protein at every meal. It is the first thing to get crowded out when appetite drops.
- Fiber
Fiber and vegetables
Helps with the constipation many patients notice in the first weeks.
- Hydration
Water
Reduced appetite can blunt thirst too, and mild dehydration often explains early tiredness.
- Portions
Smaller meals
A stomach that empties slowly handles small meals better than large ones.
- Go easy
Fat and fried food
High fat meals are a common trigger for nausea after a dose increase.
- Go easy
Alcohol
Adds calories without fullness and can irritate a stomach that is already adjusting.
How to protect muscle while losing weight
Some lean mass can be lost during substantial weight loss, including during treatment with tirzepatide. Preserving muscle is an important part of healthy weight management, particularly when weight loss continues over several months.
Adequate protein intake and regular resistance training can help support muscle retention while you lose body fat. Your Onyx treatment plan can include guidance on both so that the goal is not simply a lower number on the scale, but healthier body composition and sustainable habits.
What happens when you stop tirzepatide?
Appetite usually returns when the medication stops, and some weight regain is common. In the SURMOUNT-4 trial, participants who stopped tirzepatide after 36 weeks regained part of the weight over the following year, while those who continued lost more.
That makes stopping worth planning in advance. Depending on your situation that may mean a lower maintenance dose, a plan built around nutrition and strength training, or staying on treatment longer term. Your doctor talks this through with you before you start.
Tirzepatide vs. semaglutide
Clinical trials have found greater average weight loss with tirzepatide than semaglutide in a head-to-head study, but trial averages do not determine which medication is right for an individual patient. Your medical history, goals, response, tolerability and treatment needs all matter. Our semaglutide in Gilbert, AZ page covers that medication in the same detail.
| What differs | Tirzepatide | Semaglutide |
|---|---|---|
| Hormones it acts on | TirzepatideGLP-1 and GIP | SemaglutideGLP-1 |
| How it is taken for weight management | TirzepatideWeekly injection | SemaglutideWeekly injection |
| Maintenance dose range | Tirzepatide5 mg, 10 mg or 15 mg weekly | Semaglutide1.7 mg or 2.4 mg weekly |
| Average weight loss in a head-to-head trial | Tirzepatide20.2% at 72 weeks | Semaglutide13.7% at 72 weeks |
| Common side effects | TirzepatideNausea, diarrhea, constipation, vomiting | SemaglutideNausea, diarrhea, constipation, vomiting |
Other semaglutide and tirzepatide products have different FDA-approved indications, formulations and dosing schedules.
Have questions about tirzepatide? Start with a consultation.
Tirzepatide care at Onyx Integrative Medicine
Onyx is a naturopathic medical clinic in Gilbert with three licensed doctors. Tirzepatide is one part of a monitored weight loss program built around your evaluation, your labs and regular follow up.
- Prescribed and monitored by licensed naturopathic doctors (NMD)
- An individualized evaluation before any prescription is written, covering your history, goals and current medications
- Lab work where clinically appropriate, including thyroid, blood sugar and hormones
- Nutrition and strength training guidance included in your plan
- Regular follow up visits to review progress, side effects and your dose
- Both tirzepatide and semaglutide available, so your plan can change if it needs to
- Telemedicine available where our providers are licensed or permitted to practice
Meet your doctors
Dr. Stephanie Nichols, NMD
Onyx's founder, working mainly in women's hormones, thyroid health and the conditions that overlap with both. Dr. Stephanie builds plans from detailed panels rather than from a standard order set.
Founder · Naturopathic Physician
Dr. Kasey Nichols, NMD
Connects hormones, digestion, metabolism and mindset, and treats thyroid and gut concerns at the root. Dr. Kasey pairs the clinical plan with the lifestyle pieces that hold a result in place.
Co-Founder · Naturopathic Physician
Dr. Chelsea Deveson, NMD
Focused on the root causes of chronic disease. Dr. Chelsea treats thyroid conditions, adrenal fatigue, PCOS (now officially PMOS), perimenopause and digestive issues with individualized, lab-guided care.
Naturopathic Physician · Root-Cause Care
In their own words
What our patients say
Locations
Tirzepatide near you in Gilbert and the East Valley
Onyx Integrative Medicine & Aesthetics is on W Elliot Rd in Gilbert and sees weight management patients from across the East Valley. Lab draws are done at LabCorp, Sonora Quest or Patient's Choice, whichever is closest to you, and follow up visits can be done by telemedicine.
GilbertChandlerMesaQueen CreekTempeSan Tan ValleyApache Junction
Onyx Integrative Medicine & Aesthetics1425 W Elliot Rd Ste. 104, Gilbert, AZ 85233(480) 531-2557
FAQ
Questions About Tirzepatide
How much does tirzepatide cost in Gilbert, AZ?
How long does tirzepatide take to work?
What are the most common side effects of tirzepatide?
Is tirzepatide the same as Mounjaro and Zepbound?
Do I have to stay on tirzepatide forever?
What happens if I miss a dose of tirzepatide?
Does tirzepatide cause muscle loss?
Can I switch from semaglutide to tirzepatide?
Can I take tirzepatide if I do not have diabetes?
Related care at Onyx
Next step
Is tirzepatide right for you?
Start with a consultation at Onyx in Gilbert. Your doctor will review your history and goals and talk through your options, including tirzepatide and semaglutide.