Tirzepatide — Vendor Comparison
A dual GIP and GLP-1 receptor agonist originally developed for type 2 diabetes. Now widely studied for its effects on weight management and metabolic health.
Rankings based on our Vendor Transparency Score — COA publishing, lab accreditation, batch traceability, and published policies.See our methodology →
We earn commissions from some vendors below. This doesn't affect our rankings — they're determined by Vendor Transparency Scores alone.Full disclosure →
Dosage:
How We Score Transparency
COAs PublishedHigh weightCertificates of Analysis visible on site with batch-specific results
Lab AccreditationHigh weightTesting lab is real, accredited, and independently verifiable
Batch TraceabilityHigh weightCOA batch numbers match product listings and packaging
Years in BusinessMedium weightWHOIS + incorporation records confirm operating history
Customer ResponseMedium weightResponds to inquiries within reasonable timeframe
Refund PolicyLow weightPublished refund/remake policy is accessible and clear
Methodology v2.1 · Last updated Mar 12, 2026Full methodology →
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5 vendors
| Vendor▼ | Rating▲ | COAs▼ | Est.▼ | Price▼ | Ships▼ | Stock▼ | Actions |
|---|---|---|---|---|---|---|---|
AP Ascension Peptides | 2020 | $2.45 — stable | 2-4 days VISAMCPay | In Stock | Visit | ||
NG NG Peptide | 2019 | $3.15 — stable | 2-3 days VISAMC₿ | In Stock | Visit | ||
S1 Step OneBest Value | 2018 | $2.10 | 2-5 days VISAMCZelle | In Stock | Visit | ||
LS LabSourced | 2021 | $2.80 | 3-5 days VISAMC₿ | In Stock | Visit | ||
SA Southern Aminos | 2022 | $2.35 | 2-7 days VISAMC | In Stock | Visit |