Peptide Sciences voluntarily closed operations in early 2026, leaving thousands of researchers searching for a reliable replacement. This guide covers what happened, what researchers are losing, and why Purgo Labs is the strongest like-for-like alternative — with COA-verified compounds, competitive pricing, and a 15% discount code (HEALTH).
Peptide Sciences Is No Longer Operating
Peptide Sciences shut down in early 2026. The website is offline, orders are not being fulfilled, and customer support is no longer responding. Researchers with pending orders should contact their payment provider to request a chargeback.
Our Recommendation (2026)
Purgo Labs is the closest like-for-like replacement for Peptide Sciences. Both suppliers prioritize third-party COA verification, US-based fulfillment, and a broad compound catalog. Purgo Labs matches Peptide Sciences' documentation standards while offering a wider selection of GLP-1 class and longevity compounds — categories where Peptide Sciences was limited.
Pricing is also more competitive: Peptide Sciences charged $59.50 for BPC-157 5mg at premium pricing. Purgo Labs' equivalent, combined with the 15% discount code (HEALTH), brings the effective price well below what Peptide Sciences was charging.
Shop Purgo Labs — Use Code HEALTH for 15% OffPeptide Sciences was a Henderson, Nevada-based research peptide supplier that operated for several years before closing in early 2026. The company was known for its large compound catalog, highly regulated product documentation, and bulk purchase options. It carried a broad range of peptides across recovery, growth, metabolic, and longevity categories.
Peptide Sciences had a reputation for premium pricing — BPC-157 5mg was listed at $59.50, placing it at the higher end of the market. The company did not offer a customer review system or a cashback/return policy, which was a notable gap compared to competitors. Despite these limitations, it maintained a 4.1/5 rating on Muscle and Brawn and was widely regarded as a legitimate, well-documented supplier.
The shutdown occurred without a formal transition plan. Customers with unfulfilled orders were left without recourse from the vendor and had to pursue chargebacks through their payment providers. The closure reflects broader regulatory pressure on the research peptide industry in the United States.
| Category | Purgo Labs | Peptide Sciences |
|---|---|---|
| Current Status | Active — accepting orders | CLOSED (shut down early 2026) |
| Purity Standard | ≥99% (stated + COA verified) | Was ≥99% (now irrelevant) |
| Third-Party COA | Every batch, publicly accessible | Had COAs — no longer available |
| Pricing (BPC-157 5mg) | Competitive + 15% code HEALTH | Was $59.50 (premium pricing) |
| cGMP Manufacturing | Yes — documented | Was documented |
| Product Catalog | 30 compounds incl. GLP-1/GLP-3/NAD+ | Was massive — now unavailable |
| Shipping | 1–2 business day processing, US-based | No longer shipping |
| Customer Support | Active support team | No longer responding |
| Discount Code | Code HEALTH — 15% off | N/A — closed |
| GLP-1/Metabolic Peptides | GLP-1 S, GLP-2 T, GLP-3 R, AOD-9604, KLOW | Was limited in GLP-1 class |
| Longevity Compounds | NAD+, Epithalon, MOTS-c, SS-31 | Had limited longevity selection |
| Refund/Return Policy | Contact support | No refunds — company closed |
Purgo Labs provides third-party Certificates of Analysis for every product, accessible directly on each product page. This matches the documentation standard that Peptide Sciences was known for — and is the most important factor for researchers who relied on Peptide Sciences for verified compounds.
Purgo Labs carries GLP-1 S (semaglutide), GLP-2 T (tirzepatide), GLP-3 R (retatrutide), AOD-9604, and KLOW — categories where Peptide Sciences had limited selection. Longevity compounds including NAD+, Epithalon, MOTS-c, and SS-31 are also available.
Purgo Labs ships from the United States, with 1–2 business day processing. This matches the domestic fulfillment standard that Peptide Sciences provided and that researchers who relied on Peptide Sciences are accustomed to.
Use code HEALTH at checkout for 15% off all products at purgolabs.com. Peptide Sciences charged premium prices ($59.50 for BPC-157 5mg) without a discount code program. Purgo Labs' pricing combined with the HEALTH code makes it more cost-competitive.
While Purgo Labs is our top recommendation for researchers transitioning from Peptide Sciences, several other suppliers remain active in 2026. The most commonly cited alternatives include Core Peptides (broad catalog, competitive pricing, HPLC+MS testing) and Limitless Life Nootropics / Limitless Biotech (90+ compounds, dual-source COA testing, GMP protocols). Both are covered in separate comparison guides on this site.
Purgo Labs offers COA-verified research peptides with US-based fulfillment. Use code HEALTH for 15% off your first order.
Shop Purgo Labs — Code HEALTH for 15% OffYes. Peptide Sciences voluntarily shut down operations in early 2026. The company was based in Henderson, Nevada and had been operating for several years. The shutdown occurred during a period of increasing regulatory scrutiny surrounding research peptides. The website is no longer active and the company is not accepting new orders or responding to customer inquiries.
Peptide Sciences did not release a detailed public explanation for its closure. The shutdown coincided with increased regulatory pressure on the research peptide industry in the United States. Many vendors in the space have faced similar challenges as the FDA has increased enforcement activity around compounds sold as 'research chemicals.'
Purgo Labs is one of the strongest alternatives to Peptide Sciences for researchers who need third-party COA-verified compounds. Purgo Labs carries 30+ compounds including GLP-1 class peptides (semaglutide, tirzepatide, retatrutide), longevity compounds (NAD+, Epithalon, MOTS-c), and recovery peptides (BPC-157, TB-500). Use code HEALTH for 15% off at purgolabs.com.
Because Peptide Sciences shut down without a formal transition plan, customers with unfulfilled orders should contact their payment provider or credit card company to request a chargeback. Direct refunds from the vendor are unlikely now that the company is no longer operating.
Purgo Labs matches or exceeds Peptide Sciences on the metrics that matter most: third-party COA verification, purity standards (≥99%), US-based fulfillment, and catalog depth. Purgo Labs also carries a broader selection of GLP-1 class and longevity compounds than Peptide Sciences offered. The 15% discount code (HEALTH) makes Purgo Labs more price-competitive than Peptide Sciences was at its premium price points.
Yes. Purgo Labs provides batch-specific Certificates of Analysis (COAs) for every product, with results accessible on each product page. This matches the documentation standard that Peptide Sciences was known for before its closure.
Medical Disclaimer: All content on this site is for educational and research purposes only. Research peptides are not FDA-approved for human use. Always consult a qualified healthcare professional before considering any peptide or supplement protocol. Nothing on this site constitutes medical advice, diagnosis, or treatment.