Paradigm Peptides Alternative — Pure US Peptide
Paradigm Peptides sold products between April 2019 and March 2024, per the U.S. Attorney's Office for the Northern District of Indiana. Its owners pleaded guilty on December 10, 2025 and were sentenced on July 30, 2026. Pure U.S. Peptides is a separate, research-only U.S.-based vendor: HPLC-verified compounds, public per-batch COAs, U.S. fulfillment, and a 32-compound catalog focused on the workhorse research molecules.
What happened to Paradigm Peptides
The U.S. Attorney's Office for the Northern District of Indiana states that Paradigm Peptides — also identified as Paradigm R.E. LLC — operated at paradigmpeptides.com and shipped peptides, human chorionic gonadotropin (hCG), and SARMs from an address in Michigan City, Indiana. Its published victim notice covers purchases made between April 2019 and March 2024, which is when the business stopped selling.
On December 10, 2025, owners Matthew Kawa and his sister Jennifer Stechkober entered guilty pleas. The DOJ case page lists sentencing for both on July 30, 2026 before U.S. District Judge Cristal C. Brisco in South Bend. CBS News reported from that hearing that Kawa received 70 months and agreed to forfeit $5 million in business proceeds, and that Stechkober received 16 months.
Two details from the case are directly relevant to how researchers evaluate any supplier. Federal investigators determined that many products advertised and sold as SARMs in fact contained testosterone, a controlled substance. And per CBS News reporting on the plea, Kawa admitted that laboratory certificates were forged to lend credibility to the products. That is the practical argument for buying only from vendors whose certificates of analysis are lot-specific, published openly, and traceable to a named independent laboratory.
Primary sources: DOJ case page, Northern District of Indiana and CBS News coverage of the sentencing. Pure U.S. Peptides states only what those sources publish and does not speculate about additional charges, parties, or facts.
Research peptides in our catalog
The DOJ describes Paradigm's product mix as peptides, hCG, and SARMs. We do not have a reliable public record of their individual SKUs and will not reconstruct one. What we can state is our own catalog: these are the workhorse research peptides we stock, each with HPLC-verified purity and a public per-batch certificate of analysis on the product page. We do not carry hCG or SARMs in any form.
- • BPC-157 10mg — connective-tissue research workhorse
- • TB-500 10mg — actin-binding research peptide
- • Ipamorelin 10mg — selective ghrelin-receptor research compound
- • Selank 10mg — synthetic tuftsin-analog research peptide
- • Semax 30mg — ACTH(4-10)-fragment research peptide
- • Browse the full 32-compound catalog
Pure U.S. Peptides operates strictly within research-only positioning, maintains a tightly scoped 32-compound research catalog, and does not market human-use products.
Why a U.S.-fulfilled vendor matters now
The closure of Paradigm Peptides arrives during a period of rapidly tightening federal oversight of the broader research-supply market. For an audience of independent researchers choosing a new vendor, three structural questions matter more than they did even twelve months ago:
- Where is fulfillment based? Domestic warehouses ship faster, are not subject to import-seizure risk, and let researchers verify chain-of-custody on every order. Pure U.S. Peptides ships same-day from a U.S. fulfillment center.
- Are COAs public per batch? A vendor that requires email-request COAs is asking researchers to trust a process they cannot audit. Pure U.S. Peptides publishes the lot-specific certificate of analysis from an independent U.S. lab on the SKU page itself for 37 of its 53 listings; the other 16 show a pending-upload status next to Batch Analysis until theirs is posted.
- Is the catalog tightly research-scoped? Vendors carrying products that drift outside research-only positioning attract regulatory scrutiny that cleaner vendors do not. Pure U.S. Peptides maintains a focused 32-compound catalog of the workhorse research molecules.
Pure US Peptide difference
| Criterion | Pure US Peptide | Paradigm Peptides |
|---|---|---|
| Selling status | Operating | Stopped selling March 2024 (per DOJ) |
| HPLC purity | 99%+ verified, third-party | No public record we can verify |
| COA availability | Public, lot-specific, on the SKU page — 37 of 53 listings; 16 pending upload | No public record we can verify |
| Fulfillment | Same-day from U.S. warehouse | Shipped from Michigan City, IN (per DOJ) |
| Product categories | Research peptides only — no hCG, no SARMs | Peptides, hCG, SARMs (per DOJ) |
| Payment methods | Card, Zelle, Venmo, Cash App | No public record we can verify |
“In research-supply chain selection, qualified investigators consistently prioritize vendors that publish a lot-specific certificate of analysis on the product page itself, ship from a U.S. domestic warehouse, and hold their catalog to research-only positioning. Each criterion is independently auditable, and together they reduce variability in in-vitro work.”
Switching guide for past Paradigm customers
- Document what you ordered. Save invoices, payment confirmations, and any tracking numbers from your last Paradigm Peptides order. The DOJ victim notice for this case covers purchases made between April 2019 and March 2024, and lists 219-937-5500 (Victim Witness Specialist) as the contact.
- Verify the compound, not the brand. The research compound (e.g. BPC-157, Selank) is the same molecule across compliant vendors. What changes is the vendor's purity verification process and labeling discipline.
- Read the COA before purchasing. Pure U.S. Peptides links the lot-specific certificate of analysis on the SKU page for 37 of its 53 listings. Where one is published, open it and confirm the lot, the assay method (HPLC), and the purity number before you order; the remaining 16 listings show a pending-upload status instead.
- Apply your switch code. Use PARADIGMSWITCH25 at checkout for 20% off your first order. The code is applied automatically when you click through from this page.
- Be cautious of imitator domains. A shuttered brand is a common target for imitators. We are not aware of any public DOJ filing or company announcement indicating a Paradigm Peptides relaunch, so verify any "new Paradigm" site against published court records before transacting.
Ready to rebuild your supplier shortlist?
Use code PARADIGMSWITCH25 for 20% off your first order. Applied automatically when you click below.
Browse the catalog →Frequently asked
Why is Paradigm Peptides no longer operating?
Per the U.S. Attorney's Office for the Northern District of Indiana, Paradigm Peptides sold products between April 2019 and March 2024. Owners Matthew Kawa and Jennifer Stechkober pleaded guilty on December 10, 2025 and were sentenced on July 30, 2026. Pure U.S. Peptides has no involvement in that case and states only what the DOJ case page and published news reporting say.
When was Matthew Kawa sentenced, and to what?
The DOJ case page for the Northern District of Indiana lists sentencing for both defendants on July 30, 2026 before U.S. District Judge Cristal C. Brisco in South Bend. CBS News reported from that hearing that Matthew Kawa received 70 months and agreed to forfeit $5 million in business proceeds, and that Jennifer Stechkober received 16 months.
Is Paradigm Peptides coming back under a new name?
We are not aware of any public DOJ filing or company announcement indicating a relaunch, and we cannot speak to what the former operators may or may not do. Researchers should verify any site claiming to be Paradigm Peptides against published court records before transacting.
Is Pure U.S. Peptides a direct replacement for Paradigm Peptides?
No vendor is a drop-in replacement. Pure U.S. Peptides is an independently operated U.S. research-supply vendor that carries workhorse research peptides including BPC-157, TB-500, Ipamorelin, Selank, and Semax. We are not affiliated with Paradigm Peptides in any way.
What about my pending Paradigm Peptides order?
Pure U.S. Peptides cannot speak to Paradigm's order or refund process and has no access to their records. The DOJ case page for the Northern District of Indiana asks anyone who purchased from Paradigm Peptides between April 2019 and March 2024 and believes they may be a victim to call 219-937-5500 and ask for the Victim Witness Specialist. Retain your invoices and payment records.
Does Pure U.S. Peptides carry the same products Paradigm did?
Only partly, and deliberately so. The DOJ describes Paradigm as having sold peptides, hCG, and SARMs. Pure U.S. Peptides carries research peptides only — we do not sell hCG or SARMs. Researchers who relied on Paradigm for those categories will not find them here.
How do I check a vendor's regulatory status myself?
Search the FDA warning letter database at fda.gov and, where a criminal matter is involved, the relevant U.S. Attorney's Office site at justice.gov. Pure U.S. Peptides does not characterize any other company's regulatory standing beyond what those primary sources publish.
Is Pure U.S. Peptides involved in the federal case against Paradigm?
No. Pure U.S. Peptides is a separate, independently operated company. We have no business relationship with Paradigm Peptides, Matthew Kawa, or Jennifer Stechkober, and no involvement in the underlying DOJ case.
What is research-use-only labeling?
Every compound sold by Pure U.S. Peptides is labeled and intended exclusively for in-vitro research and laboratory use by qualified investigators. The compounds are not intended for human or veterinary consumption, diagnostic use, or any other application.