Frequently Asked Questions about Tirzepatide 40mg
Where can I buy Tirzepatide 40mg in 2026?
You can buy research-grade Tirzepatide 40mg (40mg/vial) directly from Pepta Labs starting at $139.99 per vial. We are a US-based supplier offering ≥99.30% HPLC-verified purity with independent third-party COA documentation and free shipping on all US orders. After Peptide Sciences shut down in March 2026, Pepta Labs is one of the verified vendors still operating with full third-party testing.
How much does Tirzepatide 40mg cost?
Tirzepatide 40mg (40mg/vial) starts at $139.99 per vial. Multi-vial packs are available with up to 15% savings. Use code CARD20 for 20% off your first credit card order. All orders include free US shipping and a downloadable Certificate of Analysis.
Can I buy Tirzepatide 40mg with a credit card?
Yes. Pepta Labs accepts credit and debit cards (Visa, Mastercard, Amex, Discover) directly at checkout. We also accept Cash App, Venmo, Zelle, Bitcoin, and Ethereum (5% crypto discount). Use code CARD20 for 20% off your first card order.
What purity is your Tirzepatide 40mg?
Our Tirzepatide 40mg is verified at ≥99.30% purity by reversed-phase HPLC. Each batch is independently tested by a third-party laboratory — not in-house. The Certificate of Analysis includes both HPLC chromatogram and ESI-MS identity confirmation, downloadable from this product page before purchase.
Is Tirzepatide 40mg third-party tested?
Yes. Every batch of Tirzepatide 40mg is independently tested by a third-party analytical laboratory using HPLC for purity and mass spectrometry for identity confirmation. We never test our own products — the testing lab is a separate entity with no financial relationship to Pepta Labs. Learn how to read a COA.
How should I store Tirzepatide 40mg?
Store lyophilized Tirzepatide 40mg at -20°C for long-term stability. Keep sealed vials protected from light and moisture. See our storage guide for detailed recommendations.
How fast does Tirzepatide 40mg ship?
Orders placed before 2 PM EST ship same-day. Free standard shipping is included on all US orders with no minimum order amount. Most domestic orders arrive within 2-5 business days. Tirzepatide 40mg ships as lyophilized powder in appropriate packaging.
Is Pepta Labs a Peptide Sciences alternative for Tirzepatide 40mg?
Yes. After Peptide Sciences voluntarily shut down in March 2026, Pepta Labs carries the same research-grade Tirzepatide 40mg with the added benefit of independent third-party COAs published on every product page. Use code SWITCH15 for 15% off your first order.
Are your products for human use?
No. All Pepta Labs products including Tirzepatide 40mg are chemical reference materials for in-vitro laboratory use only. They are not FDA-approved. They are not intended to diagnose, treat, cure, or prevent any disease. Not for human or animal consumption. All buyers certify research-only intended use at checkout. See our Compliance Policy.