Tirzepatide
Approved medicineThe FDA has approved a version of this as a medicine, so it has been through large studies in people.
Also called Mounjaro / Zepbound / LY3298176 / GIP/GLP-1 dual agonist
A copy of two gut hormones in one molecule. Approved for type 2 diabetes and weight loss, with large studies behind it.
The basics
- What is it?
- A medicine that copies two gut hormones at once to lower appetite and blood sugar.
- What do we know?
- A lot. Large studies in people show strong weight loss and better blood sugar. It is an approved medicine.
- What do we still not know?
- Long-term effects over many years, and how people do after stopping.
Can a doctor prescribe this?
Yes. Pharmacies are allowed to make it, so a doctor can write a prescription for it.
The FDA has approved a version of this as a medicine.
FDA approved as a finished drug, with a legal compounding pathway for the active ingredient.
Official status: On the 503A bulks list. Checked 2026-07-01.
Lab suppliers we list: 3
Doses used in research
Taken word for word from the studies and trials listed on this page. This is not a recommendation and not a dose for anyone to take.
In human trials
See source wording
under the skin · every 4 weeks · for 36 weeks
A Study of Tirzepatide (LY3298176) in Participants With Obesity or Overweight for the Maintenance of Weight LossPHASE3 · NCT04660643
“Participants received weekly doses of tirzepatide subcutaneously (SC) for 36 weeks, starting at 2.5 milligrams (mg) and increasing by 2.5 mg every 4 weeks, as tolerated, up to the maximum tolerated dose (MTD) of either 10 mg or 15 mg..”
See source wording
Tirzepatide for Alcohol Use DisorderPHASE2 · NCT06994338
“Tirzepatide injections (2.5mg, 5.0mg).”
See source wording
under the skin · once a week
A Long-term Safety Study of Tirzepatide (LY3298176) in Participants With Type 2 DiabetesPHASE3 · NCT03861039
“5 mg Tirzepatide.”
See source wording
under the skin · weekly
A Research Study to See How Well CagriSema Compared to Tirzepatide Helps People With Obesity Lose WeightPHASE3 · NCT06131437
“CagriSema 2.4 mg/2.4 mg.”
See source wording
under the skin · weekly · for 12 months
Tirzepatide for Treatment of CCCAPHASE2 · NCT07734870
“Participants will receive 2.5 mg once weekly for the first 4 weeks, followed by 5 mg once weekly for the remainder of the 12-month treatment period.”
15 mg
under the skin · weekly
Effects of Tirzepatide Plus Intensive Lifestyle Therapy on Body Weight and Metabolic Health in Latinos With ObesityPHASE4 · NCT06009653
“Participants will receive subcutaneous injections of tirzepatide that gradually increase up to 15 mg per week..”
See source wording
under the skin · every 4 weeks · for 52 weeks
Obstructive Sleep Apnea Master Protocol GPIF: A Study of Tirzepatide (LY3298176) in Participants With Obstructive Sleep ApneaPHASE3 · NCT05412004
“Participants not on positive airway pressure (PAP) therapy received a maximum tolerated dose (MTD) of 10 milligrams (mg) or 15 mg of Tirzepatide once weekly (QW) as a subcutaneous (SC) injection for 52 weeks, including the initial dose escalation by 2.5 mg every 4 weeks.”
See source wording
under the skin · every 4 weeks · for 76 weeks
Tirzepatide Use in People With Obesity and Type 1 DiabetesPHASE4 · NCT07096908
“Starting dose will be 2.5mg and dose will be increased gradually, by increments of 2.5mg, every 4 weeks to reach 15 mg at week 24 based on patient's tolerability of side effects (i.e.”
15 mg
weekly
Effects of Tirzepatide on Alcohol Intake in Patients Diagnosed With Schizophrenia and Alcohol Use DisorderPHASE2 · NCT06939088
“Tirzepatide once-weekly s.c.titrated to a maximum dose of 15 mg.”
See source wording
under the skin · weekly
Effects of Tirzepatide on Muscle and Vascular Health in Obese Older AdultsPHASE2 · NCT06811324
“Once weekly tirzepatide starting at 2.5 mg/weekly, with dose escalation monthly by 2.5 mg to a target dose of 10 mg/weekly or maximum tolerated.”
See source wording
under the skin · for 16 weeks
Normal-weight Diabetes: Adipocyte-directed Therapy With Pioglitazone or TirzepatidePHASE4 · NCT06657209
“16 weeks started at 2.5mg/week and increased to 5mg/week dose.”
See source wording
under the skin · weekly · for 52 weeks
A Study of Tirzepatide (LY3298176) Compared to Dulaglutide in Participants With Type 2 DiabetesPHASE3 · NCT03861052
“5 mg Tirzepatide.”
See source wording
Tirzepatide s Dopaminergic Effects in Alcohol Use Disorders (AUD)PHASE1 · NCT07559500
“Radiotracer injection of \[11C\]raclopride during combined PET/MR scan to measure striatal dopamine release (Methylphenidate 0.25 mg/kg injected 45 minutes post radiotracer injection).”
See source wording
weekly
Comparative Observation of Metabolic and Pharmacologic Adipose Remodeling With Enhanced Incretin AgonisTsNA · NCT07589322
“Starting at Tirzepatide 2.5 mg weekly and escalated as tolerated to 10 mg along with standardized lifestyle counseling by a dietitian (caloric deficit, physical activity guidance) and written materials..”
See source wording
under the skin · once a week
A Study of Tirzepatide (LY3298176) in Participants With Nonalcoholic Steatohepatitis (NASH)PHASE2 · NCT04166773
“5 mg Tirzepatide.”
See source wording
under the skin · every 4 weeks · for 4 weeks
A Study of Tirzepatide (LY3298176) in Participants With Obesity or OverweightPHASE3 · NCT04184622
“5 mg Tirzepatide.”
See source wording
under the skin · every 4 weeks · for 4 weeks
A Study of Tirzepatide (LY3298176) in Participants With Obesity or Overweight With Weight Related ComorbiditiesPHASE3 · NCT05822830
“15 mg or MTD - Tirzepatide.”
See source wording
under the skin · every 4 weeks · for 28 weeks
Resistance Exercise and Incretin Mimetic for Cardiometabolic Health in Survivors of ALL With ObesityPHASE2 · NCT07228741
“A once-weekly subcutaneous injection starting at 2.5 mg and dose escalation every 4 weeks up to a maximum of 15 mg, following FDA-approved guidelines.”
See source wording
under the skin · weekly
A Study of Tirzepatide (LY3298176) in Pediatric Participants With ObesityPHASE1 · NCT05696847
“Cohort 1: 2.5-5 mg Tirzepatide (BW >=50 kg).”
5 mg
under the skin · twice daily · for 12 weeks
Transcutaneous Auricular Vagus Nerve Stimulation for Poor Weight-Loss Response to Incretin Receptor AgonistsNA · NCT07619989
“Participants will receive active transcutaneous auricular vagus nerve stimulation plus tirzepatide 5 mg for 12 weeks.”
See source wording
under the skin · every 4 weeks
A Study of Tirzepatide (LY3298176) Compared With Dulaglutide on Major Cardiovascular Events in Participants With Type 2 DiabetesPHASE3 · NCT04255433
“Participants received a starting dose of 2.5 milligrams (mg) tirzepatide administered as subcutaneous (SC) injection once weekly (QW) and escalated by 2.5 mg every 4 weeks to a maximum of 15 mg QW or MTD tolerated by the participant (5 mg QW or 10 mg QW) for up to 5 years..”
See source wording
under the skin · every 4 weeks · for 72 weeks
A Study of Tirzepatide (LY3298176) In Participants After A Lifestyle Weight Loss ProgramPHASE3 · NCT04657016
“Subsequently, the dose was increased by 2.5 mg every 4 weeks up to the maximum tolerated dose (MTD) of either 10 mg or 15 mg..”
2.5 mg
under the skin
Tirzepatide for the Treatment of Cannabis Use DisorderPHASE2 · NCT07265752
“2.5mg subcutaneous injection once.”
See source wording
by mouth · daily
A Study of the Effect of Tirzepatide on How the Body Handles Birth Control Pills in Healthy Female ParticipantsPHASE1 · NCT04172987
“Participants received a 28-day packet of a combination oral contraceptive (OC) containing 21 days of tablets that consist of active ingredients (0.035 mg ethinyl estradiol (EE) and 0.25 mg norgestimate (NGM)) self-administered orally once-daily (QD) on Day 1 to Day 21, and 7 days of non-active tablets self-administer orally QD on Day 22 to Day 28 approximately the same time each day..”
See source wording
under the skin
A Study of Tirzepatide (LY3298176) in Healthy ParticipantsPHASE1 · NCT03375463
“5 mg Tirzepatide SC (Solution)-Part A.”
See source wording
under the skin · weekly
A Study of Tirzepatide (LY3298176) in Participants With Type 2 Diabetes Who Have Obesity or Are OverweightPHASE3 · NCT04657003
“10 mg Tirzepatide administered subcutaneously (SC) once weekly (QW).”
2.5 mg
under the skin · weekly · for 24 weeks
Tirzepatide to Slow Biological AgingPHASE2 · NCT07220473
“Auto injectors with a 2.5 mg dosage are given subcutaneously weekly..”
See source wording
daily
Effect of Tirzepatide and Bimagrumab on Body Composition, Insulin Sensitivity, and Bone in Adults With ObesityPHASE2 · NCT05933499
“SQ bimagrumab 300mg qweek.”
See source wording
weekly · for 4 weeks
Tirzepatide Following Adrenalectomy in Mild Autonomous Cortisol SecretionPHASE2 · NCT07573163
“Tirzepatide will be initiated at the lowest dose of 2.5 mg once weekly for 4 weeks.”
See source wording
weekly
Comparative Effectiveness of Two Initial Combination Therapies in Patients With Recent Onset DiabetesPHASE3 · NCT06246799
“Tirzepatide:Participants will be initiated on 2.5mg weekly and increase their dose to 5mg at week 4, 10mg at week 8 and 15mg at week 12 as tolerated..”
See source wording
for 4 weeks
“2.5mg for 4 weeks, 5mg for 4 weeks, 7.5mg for 4 weeks, 10mg for 12 weeks.”
See source wording
under the skin
A Study of Tirzepatide (LY3298176) in Japanese Participants With Type 2 DiabetesPHASE1 · NCT03322631
“Participants received escalating doses of 2.5 milligrams (mg), 5 mg, 10 mg and 15 mg of tirzepatide administered into the subcutaneous (SC) tissue of the abdominal wall..”
See source wording
under the skin · once a week
A Study of Tirzepatide (LY3298176) in Participants With Type 2 Diabetes Not Controlled With Diet and Exercise AlonePHASE3 · NCT03954834
“5 mg Tirzepatide.”
See source wording
under the skin · once a week · for 10 days
A Study of Tirzepatide in Overweight and Very Overweight ParticipantsPHASE1 · NCT04311411
“Participants received tirzepatide 5 milligrams (mg) once a week (QW) for Weeks 1 through 3 followed by tirzepatide 10 mg QW for Weeks 4 through 6 into the subcutaneous (SC) tissue of the abdominal wall..”
See source wording
under the skin · weekly
Effects of Tirzepatide on Weight Loss and Chronic Inflammation in People With HIVPHASE2 · NCT06935838
“An initial dose of TZP 2.5 mg subcutaneous (SQ) once weekly will be given, escalated by 2.5 mg at 4-week intervals to a final dose of 7.5mg..”
2.5 mg
under the skin · weekly · for 3 months
2024 Tirzepatide-Bariatric SurgeryPHASE4 · NCT06721507
“Participants will self inject 2.5 mg tirzepatide subcutaneously once weekly and maintain a drug administration diary.”
See source wording
under the skin · weekly · for 12 weeks
GIP/GLP-1RA as Adjunctive to Automated Insulin Delivery in Adults With Type 1 DiabetesPHASE3 · NCT06630585
“Tirzepatide is a clear, colorless to slightly yellow solution available in cartons containing four pre-filled single-dose pens or one single-dose vial: 2.5 mg, 5 mg, 7.5 mg, 10 mg, 12.5 mg, or 15 mg per 0.5 mL in a single-dose pen or vial.”
2.5 mg
once a week
The Long COVID Treatment TrialPHASE2 · NCT07128082
“The treatment group will receive the study medication (tirzepatide) for a 12 month period starting with a 2.5mg dose once a week..”
5 mg
under the skin
A Study of Tirzepatide at Different Injection Sites in Participants With Different Body SizesPHASE1 · NCT04050670
“Participants received 5mg Tirzepatide by subcutaneous injection on upper arm..”
See source wording
under the skin · every 4 weeks · for 40 weeks
A Study of Tirzepatide (LY3298176) in Adult Participants With Type 2 Diabetes Switching From Dulaglutide (SURPASS-SWITCH)PHASE4 · NCT05564039
“The starting dose of tirzepatide was 2.5 mg QW, which increased by 2.5 mg every 4 weeks (2.5 mg to 5 mg to 7.5 mg to 10 mg to 12.5mg to 15 mg) until 15 mg or MTD was reached..”
See source wording
every 3 weeks
Tirzepatide in the Treatment of Cannabis Use DisorderPHASE3 · NCT07671248
“Treatment will occur over a 12-week period, with once-weekly injections of escalating doses every 3 weeks from 2.5mg to 10mg.”
See source wording
every 4 weeks
LEAN Mass Preservation With Resistance Exercise and Protein During Semaglutide/Tirzepatide TherapyNA · NCT06885736
“The aim of this arm of the intervention is to ensure a protein intake of 1.6g/kg/day, as this was the intake level identified as the level after which no further effect was found on muscle mass in the meta-regression from (Morton et al., 2018).”
See source wording
Clinical Study of Local and Systemic Biological Impact of GLP1/GIP-Receptor Agonists in Patients With Breast Cancer: The CLARA TrialPHASE2 · NCT07676331
“3 weeks of neoadjuvant letrozole 2.5 mg/d.”
See source wording
under the skin · every 4 weeks · for 12 weeks
Effect of Tirzepatide on Recurrence of Atrial Fibrillation After Catheter Ablation in Obese PatientsPHASE4 · NCT07715929
“Titrated from 2.5 mg/week to a target of 10 mg/week over 12 weeks, then maintained at the maximum tolerated dose for the remainder of the 52-week treatment period..”
See source wording
under the skin · every 4 weeks · for 20 weeks
An Open-Label Tirzepatide Trial for Comorbid Obesity and Stimulant Use DisorderPHASE2 · NCT07693608
“Following the instructions of the FDA-approved prescribing label, the dosing schedule will include a 4-week titration at a starting dosage of 2.5mg/week.”
See source wording
under the skin · weekly
TIRzepatide for the Treatment of Obesity in Patients With Atrial FibrillationPHASE2 · NCT06802081
“Weekly subcutaneous injections starting with dose 2.5mg, then increase dose by 2.5mg at week 4 (5mg), week 8 (7.5mg) and at week12 (10mg) as tolerated..”
See source wording
weekly
Effect of Tirzepatide on Diabetic Peripheral Sensorimotor NeuropathyPHASE4 · NCT07706088
“Tirzepatide 2.5mg weekly.”
- Novel evidence for tirzepatide, a dual GLP-1/GIP receptor agonist, to reduce the motivation for cocaine in rodents.
Animal study, rats or mice
EBioMedicine · 2026
- Weight-loss dynamics with tirzepatide versus semaglutide.
PNAS nexus · 2026
- [SURPASS CVOT : cardiovascular benefits with tirzepatide versus dulaglutide in type 2 diabetes].
Revue medicale de Liege · 2026
- Cardiovascular adverse event reporting profile of tirzepatide: a real-world pharmacovigilance analysis of heart failure, arrhythmias, and ischemic events.
Frontiers in pharmacology · 2026
- Semaglutide and tirzepatide effects on cardiovascular outcomes in people with overweight or obesity in the real world (STEER).
Diabetes, obesity & metabolism · 2026
- A Rare Case of Tirzepatide-Associated Immune Thrombocytopenia.
Cureus · 2026
- Auditable large language model curation of clinical notes refines glucagon-like peptide-1 initiation, persistence ascertainment, and compounding use beyond prescription records.
Biology methods & protocols · 2026
- Accidental intradermal injection of tirzepatide associated with increased adverse events.
Postgraduate medical journal · 2026
- Decoding the hallmarks of GLP-1RA weight-loss super-responders.
Biology methods & protocols · 2026
- GLP-1 medications: use and interest in a representative survey of Finns.
International journal of obesity (2005) · 2026
- Class-Wide Disproportionate Reporting of Impaired Gastric Emptying Across Nine Glucagon-Like Peptide-1 Receptor Agonist Products: A Signal-Detection Analysis of the FDA Adverse Event Reporting System
Journal not recorded · 2026
- Class-Wide Impaired Gastric Emptying Signal Across Nine GLP-1 Receptor Agonist Agents: Indication-Stratified Pharmacovigilance Analysis of 6,868 Cases in FDA FAERS (2004-2024) with Cross-National Validation
Journal not recorded · 2026
- Ketoacidosis Risk in Non-diabetic Patients Using Semaglutide Versus Tirzepatide for Obesity: A Disproportionality Analysis of the FDA Adverse Event Reporting System.
Cureus · 2026
- Influence without medical expertise: a social network analysis of Mounjaro discussions on twitter (X).
Saudi pharmaceutical journal : SPJ : the official publication of the Saudi Pharmaceutical Society · 2026
- Acute Small Bowel Obstruction Induced by Tirzepatide (Mounjaro).
Cureus · 2026
- Outpatient Dispensing Patterns and Changes in Tirzepatide Strength Mix in Japan: A Study Using the National Open Claims Data.
Cureus · 2026
- Same Result, Different Price: Compounded versus Branded Tirzepatide
Journal not recorded · 2026
- New-Onset Alopecia Is Significantly Higher with Tirzepatide than with Semaglutide, Even After Weight-Loss Matching
Journal not recorded · 2026
- Incident Frailty and Mortality Risk with Significant Tirzepatide-Associated Weight Loss in Medicare-Age Patients
Journal not recorded · 2026
- Adverse events associated with tirzepatide: a focus on subgroup-specific differences.
BMC pharmacology & toxicology · 2026
- Patterns of Use for GLP-1 Receptor Agonists in a Weight Management Cohort: A Military Health System Database Analysis of Active Duty Service Members From 2021 to 2025.
Military medicine · 2026
- Trends in 1-year persistence and adherence among initiators of high-potency, weight loss-indicated glucagon-like peptide 1 receptor agonists.
Journal of managed care & specialty pharmacy · 2026
- A Case of Severe Hypercalcemia in a Patient Taking Tirzepatide: Potential Risk Factors.
Cureus · 2026
- Weight reduction and treatment adherence with tirzepatide using the Individualized Virtual Integrative Medicine (IVIM) protocol.
Obesity pillars · 2026
- [Tirzepatide (Mounjaro®) : a GIP/GLP-1 receptor dual agonist for the treatment of type 2 diabetes].
Revue medicale de Liege · 2025
- Decoding the hallmarks of GLP-1RA weight-loss super responders
Journal not recorded · 2025
- Documentation of Compounded GLP-1 Receptor Agonists in a Large Primary Care Dataset.
Pharmacoepidemiology and drug safety · 2025
- Longitudinal Analysis of Obesity Drug Use and Public Awareness.
JAMA network open · 2025
- Real-World Weight Loss Observed With Semaglutide and Tirzepatide in Patients with Overweight or Obesity and Without Type 2 Diabetes (SHAPE).
Advances in therapy · 2025
- Real-World Safety Concerns of Tirzepatide: A Retrospective Analysis of FAERS Data (2022-2025).
Healthcare (Basel, Switzerland) · 2025
- Harnessing Facebook to Investigate Real-World Mentions of Adverse Events of Glucagon-Like Peptide-1 Receptor Agonist (GLP-1 RA) Medications: Observational Study of Facebook Posts From 2022 to 2024.
JMIR infodemiology · 2025
- A Critical Analysis of the Clinical Use of Incretin-Based Therapies: Efficacy and Adverse Events.
Archives of clinical and medical case reports · 2025
- Tirzepatide
Journal not recorded · 2006
- Clinical Implications of Mounjaro (Tirzepatide) for Breast Cancer Detection and Management: A Narrative Review.
Review of earlier work
Cureus · 2026
- Comparative Efficacy and Safety of Tirzepatide Versus Dulaglutide in Patients with Type 2 Diabetes Mellitus: A Systematic Review and Meta-Analysis.
Review of earlier work
Healthcare (Basel, Switzerland) · 2026
- Pharmacogenomics of GLP-1 Receptor Agonists: Precision Medicine in the Age of Ozempic and Mounjaro
Review of earlier work
Journal not recorded · 2026
- Evolution of incretin-based therapies: From GLP-1 monotherapy to dual and triple agonists: A new era in metabolic therapy.
Review of earlier work
The Indian journal of medical research · 2026
- Correction: Clinical Implications of Mounjaro (Tirzepatide) for Breast Cancer Detection and Management: A Narrative Review.
Review of earlier work
Cureus · 2026
- Tirzepatide and Cardiometabolic Effects in Obese Non-diabetic Adults: A Systematic Review, Meta-Analysis, and Narrative Synthesis of Cardiovascular Outcomes.
Review of earlier work
Cureus · 2026
- Tirzepatide vs. semaglutide for obesity, glycemic control, and cardiovascular outcomes: a narrative review of clinical trials.
Review of earlier work
Frontiers in medicine · 2026
- Comparative Efficacy of Tirzepatide vs. Semaglutide in Reducing Body Weight in Humans: A Systematic Review and Meta-Analysis of Clinical Trials and Real-World Data.
Review of earlier work
Journal of clinical medicine research · 2025