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Compounds / Tirzepatide

Tirzepatide

Full name
Tirzepatide (dual GIP/GLP-1 receptor agonist)
Mechanism
Dual agonist of GIP and GLP-1 receptors. Combines incretin pathways to improve insulin secretion and sensitivity, reduce appetite, and slow gastric emptying.
Half-life
~5 days
Administration
subcutaneous
Typical dosage*
low: 2.5mg/week (start) · typical: 5-10mg/week · high: 15mg/week
Researched for
type 2 diabetes, chronic weight management
Reported side effects
nausea, diarrhoea, decreased appetite, rare: pancreatitis, gallbladder events, thyroid C-cell warning (rodent)
Interactions
delayed gastric emptying affects oral drug absorption, hypoglycaemia risk with insulin/sulfonylureas
Commonly combined
prescriber-directed; not for self-stacking
Scheduling
🇦🇺 AUPrescription-only (S4); ARTG-registered (Mounjaro)
🇺🇸 USFDA-approved (Mounjaro/Zepbound)
🇬🇧 UKLicensed prescription medicine (Mounjaro)
Regulatory status
FDA/TGA/MHRA-APPROVED prescription drug. Grey-market 'research' tirzepatide is not the approved product.
Recon default
2500 mcg typical · 2 ml BAC · refrigerated

*Doses are commonly-reported figures from public sources, not a recommendation. Educational only.

25studies
9faqs
metabolicweight-managementapproved-drug

Studies (25)

YearTitle / venueSource
2025Cardiovascular Outcomes with Tirzepatide versus Dulaglutide in Type 2 Diabetes
The New England journal of medicine · human
PMID 41406444
2025Tirzepatide as Compared with Semaglutide for the Treatment of Obesity
The New England journal of medicine · human
PMID 40353578
2025Tirzepatide for overweight and obesity management
Expert opinion on pharmacotherapy · preclinical
PMID 39632534
2025Tirzepatide did not impact metabolic adaptation in people with obesity, but increased fat oxidation
Cell metabolism · human
PMID 40203836
2025Semaglutide and Tirzepatide in Patients With Heart Failure With Preserved Ejection Fraction
JAMA · preclinical
PMID 40886075
2024Continued Treatment With Tirzepatide for Maintenance of Weight Reduction in Adults With Obesity: The SURMOUNT-4 Randomized Clinical Trial
JAMA · human
PMID 38078870
2024Comparison of tirzepatide and dulaglutide on major adverse cardiovascular events in participants with type 2 diabetes and atherosclerotic cardiovascular disease: SURPASS-CVOT design and baseline characteristics
American heart journal · preclinical
PMID 37758044
2024Semaglutide vs Tirzepatide for Weight Loss in Adults With Overweight or Obesity
JAMA internal medicine · preclinical
PMID 38976257
2024Tirzepatide for Metabolic Dysfunction-Associated Steatohepatitis with Liver Fibrosis
The New England journal of medicine · human
PMID 38856224
2024Tirzepatide: A Review in Type 2 Diabetes
Drugs · preclinical
PMID 38388874
2024Subcutaneously administered tirzepatide vs semaglutide for adults with type 2 diabetes: a systematic review and network meta-analysis of randomised controlled trials
Diabetologia · preclinical
PMID 38613667
2024The impact of tirzepatide and glucagon-like peptide 1 receptor agonists on oral hormonal contraception
Journal of the American Pharmacists Association : JAPhA · preclinical
PMID 37940101
2024Tirzepatide and exercise training in obesity
Clinical hemorheology and microcirculation · human
PMID 38640145
2023Tirzepatide Reduces Appetite, Energy Intake, and Fat Mass in People With Type 2 Diabetes
Diabetes care · human
PMID 36857477
2023Tirzepatide vs Insulin Lispro Added to Basal Insulin in Type 2 Diabetes: The SURPASS-6 Randomized Clinical Trial
JAMA · human
PMID 37786396
2023New Drug: Tirzepatide (Mounjaro(™))
The Senior care pharmacist · preclinical
PMID 36751934
2023Efficacy and Safety of Tirzepatide in Type 2 Diabetes and Obesity Management
Journal of obesity & metabolic syndrome · preclinical
PMID 36750526
2022Tirzepatide: A Systematic Update
International journal of molecular sciences · preclinical
PMID 36498958
2022Effect of Subcutaneous Tirzepatide vs Placebo Added to Titrated Insulin Glargine on Glycemic Control in Patients With Type 2 Diabetes: The SURPASS-5 Randomized Clinical Trial
JAMA · human
PMID 35133415
2022Tirzepatide cardiovascular event risk assessment: a pre-specified meta-analysis
Nature medicine · preclinical
PMID 35210595
2022Efficacy and safety of tirzepatide monotherapy compared with dulaglutide in Japanese patients with type 2 diabetes (SURPASS J-mono): a double-blind, multicentre, randomised, phase 3 trial
The lancet. Diabetes & endocrinology · human
PMID 35914543
2021Tirzepatide versus Semaglutide Once Weekly in Patients with Type 2 Diabetes
The New England journal of medicine · human
PMID 34170647
2021Efficacy and safety of a novel dual GIP and GLP-1 receptor agonist tirzepatide in patients with type 2 diabetes (SURPASS-1): a double-blind, randomised, phase 3 trial
Lancet (London, England) · human
PMID 34186022
2021Tirzepatide versus insulin glargine in type 2 diabetes and increased cardiovascular risk (SURPASS-4): a randomised, open-label, parallel-group, multicentre, phase 3 trial
Lancet (London, England) · human
PMID 34672967
2020Tirzepatide is an imbalanced and biased dual GIP and GLP-1 receptor agonist
JCI insight · preclinical
PMID 32730231

Questions (9)

What is Tirzepatide?

Tirzepatide (Tirzepatide (dual GIP/GLP-1 receptor agonist)). Dual agonist of GIP and GLP-1 receptors. Combines incretin pathways to improve insulin secretion and sensitivity, reduce appetite, and slow gastric emptying.

What is Tirzepatide used for?

Commonly discussed uses: type 2 diabetes, chronic weight management. There is both human and animal/preclinical research, though the depth and quality vary by indication. Note: most uses are not approved indications.

How does Tirzepatide work?

Mechanism: Dual agonist of GIP and GLP-1 receptors. Combines incretin pathways to improve insulin secretion and sensitivity, reduce appetite, and slow gastric emptying.

Is Tirzepatide safe?

Reported considerations: nausea, diarrhoea, decreased appetite, rare: pancreatitis, gallbladder events, thyroid C-cell warning (rodent). There is both human and animal/preclinical research, though the depth and quality vary by indication. FDA/TGA/MHRA-APPROVED prescription drug. Grey-market 'research' tirzepatide is not the approved product. This is not a safety endorsement; safety data for unapproved compounds is incomplete.

What is the typical dose of Tirzepatide?

Commonly cited ranges (educational reference, not a recommendation): low 2.5mg/week (start), typical 5-10mg/week, high 15mg/week. Administration: subcutaneous. Half-life: ~5 days.

Is Tirzepatide legal in Australia?

Australian status: Prescription-only (S4); ARTG-registered (Mounjaro). FDA/TGA/MHRA-APPROVED prescription drug. Grey-market 'research' tirzepatide is not the approved product. General regulatory context: most active peptides are Schedule 4 and require a prescription; import via the Personal Importation Scheme requires a valid Australian prescription for prescription-only goods.

How do you store Tirzepatide?

Reconstitution/storage reference: approved product pre-filled; compounded vials vary; storage: refrigerated.

What is Tirzepatide commonly stacked with?

Commonly discussed combinations (anecdotal for unapproved compounds): prescriber-directed; not for self-stacking. Stacking increases interaction/safety uncertainty.