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Treatments

Tirzepatide in Livonia

A clinician drawing a dose from a vial into a syringe

A weekly injection that acts on two gut hormone receptors, prescribed and monitored by a provider. Tirzepatide starts at $169 a month, beginning with a consultation and lab work.

What is tirzepatide?

Tirzepatide is a once-weekly injection given under the skin. It is the medication sold under the brand names Mounjaro, which is licensed for type 2 diabetes, and Zepbound, which is licensed for chronic weight management in adults who have obesity, or who are overweight and have at least one weight-related condition such as high blood pressure, type 2 diabetes, or high cholesterol.

Tirzepatide starts at $169 a month at Serenity, against $139 for semaglutide, which acts at one of those two receptors rather than both. The consultation and lab work come first, and the medication is prescribed only where it is appropriate for you.

How does tirzepatide work?

Your gut releases hormones after you eat that tell the rest of the body a meal has arrived. Two of them matter here: GLP-1 and GIP. They slow how quickly the stomach empties, signal fullness to the brain, and prompt the pancreas to release insulin when blood glucose is high.

Tirzepatide copies both signals at once. That is the single thing that separates it from semaglutide, which acts at the GLP-1 receptor alone. Tirzepatide is a dual GIP and GLP-1 receptor agonist, and calling it “a GLP-1” is a shorthand that leaves out half of what it does.

The effect you notice is that you feel full sooner, stay full longer, and think about food less often. Appetite is a hormonal signal, not a character flaw, and this medication acts on the signal.

How much weight do people lose on tirzepatide?

In SURMOUNT-1, the 72-week trial in adults with obesity or overweight without diabetes, mean weight reduction was about 15% on the 5 mg dose, about 19.5% on 10 mg, and about 20.9% on 15 mg, against about 3.1% on placebo. Everyone in the trial, including the placebo group, also received counselling on a reduced-calorie diet and increased physical activity.

Two honest caveats belong next to those numbers. The first is that they are averages: individual results ranged widely, and some participants lost far less. The second is that the trial studied the medication alongside a diet and activity change, which is how it is licensed and how it should be used. Nobody in that trial took the drug and changed nothing else.

What does treatment actually involve?

It starts at a low dose and goes up slowly. The standard schedule begins at 2.5 mg once weekly for four weeks, which is a starting dose rather than a treatment dose, then increases in 2.5 mg steps at intervals of at least four weeks until you reach a dose that works and that you tolerate.

Going up slowly is deliberate. Most of the gut side effects happen during escalation, and rushing it is the usual reason someone cannot stay on the medication.

You inject it yourself once a week, on the same day each week, into the abdomen, thigh, or upper arm. You can change the day if you need to, as long as there are at least three days between doses.

What are the side effects?

The common ones are gastrointestinal: nausea, diarrhea, vomiting, constipation, indigestion, and abdominal pain. They are usually worst after a dose increase and settle as your body adjusts. Injection site reactions, fatigue, and hair loss are also reported.

Less common but more serious problems include pancreatitis, gallbladder disease, acute kidney injury caused by dehydration from persistent vomiting or diarrhea, and low blood sugar when the medication is combined with insulin or a sulfonylurea. Severe abdominal pain that will not settle, especially with vomiting, needs to be seen the same day.

You will be told which symptoms are expected, which ones mean call us, and which ones mean go to an emergency department. That briefing is part of the visit.

Who should not take tirzepatide?

Tirzepatide carries a boxed warning about thyroid C-cell tumors, based on findings in rodents; whether it causes them in humans is not known. It must not be used by anyone with a personal or family history of medullary thyroid carcinoma, or with multiple endocrine neoplasia syndrome type 2. It is also not for anyone who has had a serious hypersensitivity reaction to it.

It is not for use in pregnancy, and it should be stopped if you are planning to become pregnant. A history of pancreatitis, gallbladder disease, severe gastrointestinal disease, or diabetic retinopathy all change the conversation rather than ending it.

Bring your full medication list to the consultation. This is not a prescription anyone should collect without that conversation.

Does tirzepatide affect birth control?

This one is missed constantly and it matters. Tirzepatide can reduce the effectiveness of oral hormonal contraceptives, because slowing gastric emptying changes how the pill is absorbed. The prescribing information advises switching to a non-oral method, or adding a barrier method, for four weeks after starting and for four weeks after each dose increase.

If you take the pill, raise it at your consultation before you start.

What is the B12 for?

The B12 comes in the same injection. It is the tirzepatide that acts on appetite; B12 is not what drives the weight loss, and nobody should start on the expectation that it does.

What happens if I stop?

Weight tends to come back. In the SURMOUNT-4 trial, participants who switched to placebo after 36 weeks on tirzepatide regained about 14% of their body weight over the following year, while those who stayed on it lost a further 5.5%. Treatment for obesity works while it is being taken, in the same way blood pressure medication does, and stopping is a decision to make with a provider rather than by running out of prescription.

How do I start?

Call (248) 482-8809 or book a visit. The first appointment is a consultation: your history, your medication list, your measurements, and lab work. Nothing is prescribed before that, and the consultation is where you get the exact cost for your own plan rather than a figure off a page.

Serenity also treats illness and injury on a walk-in basis seven days a week. A weight-management consultation is one of the few visits that works better with time set aside for it.

Questions

Before you come in for tirzepatide

The things people ask most often. There are more on the FAQ page.

Which weight-loss medications do you use?

Semaglutide and tirzepatide, the two GLP-1 medications people usually mean when they ask about a weight-loss shot. Which one is right, and whether one is right for you at all, is decided at a consultation after your history and lab work are reviewed. These medications are approved for use alongside a reduced-calorie diet and increased activity, which is how they were studied.

Who should not have a GLP-1 medication or an IV?

GLP-1 medications carry a warning against use by anyone with a personal or family history of medullary thyroid carcinoma or multiple endocrine neoplasia type 2, and they are not for use in pregnancy. For an IV, tell the provider if you are pregnant or breastfeeding, have kidney disease, have heart failure or another condition where fluid load matters, or have reacted to an infusion before. Both start with an assessment, and sometimes the honest answer is no.

How much are IV drips and weight-loss programs?

IV drips start at $129 and are self-pay, with every price published on the drip menu rather than quoted on the phone. GLP injectables start at $139 a month for semaglutide and $169 for tirzepatide; what your own plan costs depends on the medication and your insurance, and the consultation is where you get the exact figure.

Can I book online?

Yes. Online booking is available for the services that are scheduled rather than walked in, including IV drips, injections, and weight-loss consultations. For everyday illness and injury, walking in is still the fastest route and no booking is needed.

What insurance do you accept?

Serenity accepts 21+ plans, including Medicaid plans, Medicare plans, and the major commercial carriers: Blue Cross Blue Shield, Aetna, Cigna, HAP, Humana, Meridian, Molina, Priority Health, and United Healthcare among them. The full list is published on the insurance page. Plans change, so if yours is not listed, call (248) 482-8809 and ask rather than assuming.

See all questions

From our patients

What people say about the clinic

Reviews left on Google, in our patients' own words, each one linking to the original so you can check it yourself. None of them are about weight management, and we do not publish before-and-after claims: what any medication does for you is a conversation with a provider, not a quote on a web page.