Tirzepatide
Also known as: Mounjaro, Zepbound, LY3298176, GIP/GLP-1 receptor agonist
Tirzepatide is an injectable peptide that activates two gut hormone receptors, the GIP receptor and the GLP-1 receptor. It is a 39-amino-acid modified peptide with a fatty acid chain that binds to albumin and extends how long it stays in the body. It is marketed by Eli Lilly under the brand names Mounjaro and Zepbound.
How it works
According to published pharmacology, tirzepatide binds to and activates the GIP and GLP-1 receptors, which are involved in insulin secretion and in brain regions that regulate appetite and food intake. Research describes effects on blood glucose regulation, gastric emptying, and reduced food intake. These are the mechanisms studied in clinical trials and do not represent a promise of any individual result.
Researched uses
- Studied for glycemic control in adults with type 2 diabetes (SURPASS trial program)
- Studied for chronic weight management in adults with obesity or overweight (SURMOUNT trial program)
- Studied for moderate-to-severe obstructive sleep apnea in adults with obesity (SURMOUNT-OSA)
- Studied for cardiovascular and metabolic outcomes in ongoing and completed trials
Tirzepatide is FDA-approved as two branded products from Eli Lilly. Mounjaro is approved for glycemic control in adults with type 2 diabetes. Zepbound is approved for chronic weight management in eligible adults and for moderate-to-severe obstructive sleep apnea in adults with obesity. The FDA determined the tirzepatide shortage resolved, and that determination was affirmed in December 2024. Compounding transition periods for licensed pharmacies and outsourcing facilities ended in early 2025. Broad compounding of tirzepatide is no longer permitted. A narrow patient-specific exception under section 503A may apply only with a documented clinical justification such as an allergy to an ingredient in the commercial product, not cost. Products sold online as tirzepatide "for research use only" are not FDA-approved medicines and fall outside the licensed pharmacy system.
Tirzepatide providers compared
Providers that have passed our rubric review are listed first, then ordered by the total cost of a 3-month protocol. We average every cost to a standard 3-month protocol, which our medical advisors consider the best basis for comparing cost and value, and the headline figure folds in any one-time consult or provider-review fee plus three months of membership. Use the calculator below to adjust the length and see the same total broken out.
| Provider | Sourcing | What's included | Verified | Visit provider | |
|---|---|---|---|---|---|
RxPepsDirectVerified Tirzepatide/B12 | 503A pharmacy | $174 for 3 months (est.) ≈3 vials · $45/vial incl. $39 consult | Consult fee extra · no membership | Jul 8, 2026 vial price | View |
We average every cost to a standard 3-month protocol, which our medical advisors consider the best window for comparing cost and value. Monthly plans are multiplied by 3 and 3-month programs are taken as billed; each provider's own sticker price and cadence are shown underneath.
The headline figure is the total 3-month cost: the medication plus any one-time consult or provider-review fee (for example RxPepsDirect's $39) and three months of any membership fee. Where a fee is not published we fold in what is known and flag that other fees may apply.
Per-vial providers are averaged to a 3-month protocol at roughly one vial per month (3 vials), marked "est.", with the per-vial price shown underneath. Actual vial count depends on your dose and protocol.
Prices are gathered from each provider's public pages. The "Verified" date is when we last checked the provider's sticker price; for per-vial providers it is the vial price that was verified, not the averaged 3-month total.
Value check: total cost of therapy
This is the real value comparison. A sticker price hides consult and membership fees, so this adds everything up for a full protocol of Tirzepatide and ranks by true total cost. We default to a 3-month protocol, the window our medical advisors consider best for judging value.
Per-vial providers are estimated at about one vial per month (3 vials for 3 months), plus any one-time consult. Actual vial count depends on your dose and protocol, so the real cost may run higher or lower.
Safety notes
Clinical trials reported gastrointestinal side effects most commonly, including nausea, vomiting, diarrhea, and constipation. Labeling for the approved products carries a boxed warning about the risk of thyroid C-cell tumors based on rodent studies, and reported risks include pancreatitis, gallbladder problems, and hypoglycemia when combined with certain other medicines. Quality, identity, and dose accuracy cannot be assured for tirzepatide obtained outside the licensed pharmacy system, including products marketed as research-only.
Tirzepatide questions
How much does Tirzepatide cost?
Across the licensed providers tracked here, a full 3-month protocol of Tirzepatide totals $174 to $174, depending on the provider, dose, and what is included. We average every cost to a standard 3-month protocol, which our medical advisors consider the best basis for comparing cost and value, and the total folds in any one-time consult or provider-review fee and three months of membership. The providers listing Tirzepatide sell it by the vial, so the 3-month figure is an estimate of about one vial per month; the exact vial count depends on your dose and protocol. Each price shows the date the provider's sticker price was verified.
Is tirzepatide FDA-approved?
Yes. It is FDA-approved as two branded products: Mounjaro for type 2 diabetes and Zepbound for chronic weight management and for moderate-to-severe obstructive sleep apnea in adults with obesity.
Can I still get compounded tirzepatide?
The FDA determined the shortage resolved and the compounding transition periods ended in early 2025. Broad compounding is no longer permitted. Only a narrow patient-specific exception may apply, based on a documented clinical reason rather than cost. A licensed prescriber can explain whether any exception applies to a given patient.
How is the cost or access typically handled?
Access depends on the prescription, the specific brand product, insurance coverage, and pharmacy availability. Cost and coverage vary widely by plan and region. A prescriber or pharmacist can provide current information for an individual situation.
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