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Trusted by 10,000+ researchers

Pharma-grade research peptides. Shipped fast.

99%+ purity. Third-party HPLC and mass-spec tested. Every lot ships with a COA and free bacteriostatic water.

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★ 4.9/5 average rating COA on every lot Same-day US shipping
98%+Purity verified
10K+Orders delivered
4.9/5Customer rating
Same-day US shippingOrders in before 2pm ET leave the same business day.
Free vialIncluded with every order, no code needed.
COA on every lotThird-party HPLC and mass-spec reports published.
30-day guaranteeUnopened vials returnable, full refund on any failed lot.
As seen onResearch cited from peer-reviewed sources PPubMed THE NEW ENGLANDJOURNAL of MEDICINE JAMA Cochrane nature ForbesHEALTH
“COA matched independent testing perfectly. Best purity I’ve used — reordering monthly.”
— Verified buyer

What are your research goals?

Define your research focus and jump straight to the right compounds.

Browse all 43 products →
GLP peptidesMetabolic and appetite research — semaglutide, tirzepatide, cagrilintide and more.Explore → WellnessRecovery, repair and daily support — BPC-157, TB-500, NAD+ and stacks.Explore → Cognitive functionFocus and neuro research — Semax, Selank, Dihexa.Explore → Cosmetic peptidesSkin, hair and collagen research — GHK-Cu lyophilized and serum.Explore →

Our best selling products

The eight compounds researchers reorder most. Code GET25 takes another 25% off at checkout.

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Curated peptide bundles for laboratory research — everything in one shipment.

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25% off + a free vial

Use code GET25 at checkout for 25% off your order plus a free vial.

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Committed to research excellence

Manufactured and handled under strict quality-control protocols, with secure checkout and knowledgeable, research-focused support.

Research-grade standardsStrict QC on every batch, start to finish.
Protected transactionsSecure checkout built for confidentiality.
Professional assistanceReal answers on product selection and handling.

Tested a purchased product?

Submit your independent lab result and receive 5% off your next order. We publish every verified third-party report.

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What researchers say

Verified buyers, reordering monthly.

★★★★★
Consistent lot-to-lot purity
Reconstitutes clean every time and the COA numbers match what we measure in-house.
Verified buyer · Lab manager
★★★★★
Shipping is genuinely same-day
Ordered at 11am, tracking hit my inbox before lunch. Packaging was cold-stable and intact.
Verified buyer · Research group
★★★★★
The documentation sold me
Full HPLC and mass-spec reports per batch. That transparency is rare at this price point.
Verified buyer · Independent researcher

About Peppy University

Peppy University advances peptide science through high-quality research-grade compounds and scientific education. Founded on precision, integrity and academic excellence, we serve researchers, laboratories and scientific professionals who need reliable compounds for innovation and discovery. Peptide research demands strict standards and consistency — our products are sourced and handled under rigorous quality control to maintain purity, stability and research reliability.

Read our story

Frequently asked

Are these products for human use?

No. Every compound sold by PU Peptides is supplied strictly for in vitro laboratory research. Not for human or veterinary consumption.

How do I use code GET25?

Add products to your cart and enter GET25 at checkout. It applies 25% off sitewide, stacking on top of any product that is already on sale.

Do you publish a Certificate of Analysis?

Yes. Every lot is third-party tested and released with a published COA showing 99%+ purity, identity by mass spec and HPLC.

How fast do orders ship?

Orders placed before 2pm ET ship the same business day from our US facility, with tracking emailed on dispatch.

What is your return policy?

Unopened vials can be returned within 30 days. If a lot ever fails to match its COA we replace or refund it in full.

How should vials be stored?

Lyophilized peptides are stable at room temperature for shipping; store at -20°C long-term and refrigerate after reconstitution with bacteriostatic water.

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