Evidence & concentration worksheet · Metabolic & Weight Loss
Tirzepatide 5 mg
Evidence supports named, regulated products and indications. A research powder or different vial strength does not inherit the approved product's formulation, reconstitution, storage, or dosing instructions.
Evidence review
Approved dosing is product-specific
Evidence supports named, regulated products and indications. A research powder or different vial strength does not inherit the approved product's formulation, reconstitution, storage, or dosing instructions.
How it works
Tirzepatide is a synthetic peptide medication that acts as a dual agonist at the glucose-dependent insulinotropic polypeptide (GIP) and glucagon-like peptide-1 (GLP-1) receptors.[4][5] Incretins help coordinate insulin release, appetite, and glucose handling after meals, and the approved tirzepatide products are formulated for once-weekly subcutaneous dosing.
In the United States, Mounjaro is FDA-approved for improving glycemic control in adults with type 2 diabetes; Zepbound is approved for chronic weight management in specified adults and for moderate-to-severe obstructive sleep apnea in adults with obesity.[1][2][3] These approvals apply to the named products, presentations, indications, and labels — not to an unverified powder sold as a "research vial."
Benefits & side effects
The SURPASS program evaluated tirzepatide in type 2 diabetes. In SURPASS-2, tirzepatide produced larger mean A1C and weight reductions than semaglutide 1 mg over 40 weeks, with gastrointestinal effects common in both groups.[6] That trial does not compare every semaglutide product or dose.
SURMOUNT-1 reported substantial dose-related weight reductions over 72 weeks in adults with obesity or overweight without diabetes, and SURMOUNT-2 studied adults who also had type 2 diabetes.[7][15] Separate randomized evidence supports the obstructive-sleep-apnea indication, while SURMOUNT-4 found weight regain after randomized withdrawal.[16][17] Claims about anti-aging or performance enhancement are not supported by this trial base.
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Concentration and measurement calculator
Use this only to check arithmetic from an authoritative product label, registered study protocol, or qualified clinician.
Arithmetic only — not a dose recommendation
Enter only a concentration and target supplied by an authoritative product label, a registered study protocol, or a qualified clinician. A correct conversion does not establish that a substance, vial, route, or dose is safe or effective.
Enter only a concentration and target supplied by an authoritative product label, a registered study protocol, or a qualified clinician. A correct conversion does not establish that a substance, vial, route, or dose is safe or effective.
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References
References
- U.S. FDA — Mounjaro prescribing information (2026)
- U.S. FDA — Zepbound prescribing information (2026)
- U.S. FDA — FDA approval for tirzepatide in obstructive sleep apnea (2024)
- PubChem — Tirzepatide compound summary (2026)
- Molecular Metabolism — Preclinical pharmacology of the dual GIP/GLP-1 agonist LY3298176 (2018)
- New England Journal of Medicine — Tirzepatide versus semaglutide in type 2 diabetes (2021)
- New England Journal of Medicine — SURMOUNT-1 tirzepatide obesity trial (2022)
- U.S. FDA — Concerns with unapproved GLP-1 drugs used for weight loss (2026)
- Cell Metabolism — Biology of incretin hormones (2006)
- The Lancet — SURMOUNT-2 trial in obesity and type 2 diabetes (2023)
- New England Journal of Medicine — Tirzepatide for obstructive sleep apnea and obesity (2024)
- JAMA — SURMOUNT-4 randomized withdrawal trial (2024)
- U.S. FDA — Proposed exclusion of tirzepatide and semaglutide from the 503B bulks list (2026)