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GHK-Cu is a naturally occurring copper-binding tripeptide that has drawn growing interest in dermatology and wound-care research. As demand for peptide-based skin treatments keeps climbing in 2026, it's worth separating what the science actually demonstrates from what's still speculative. Here's a look at what GHK-Cu is, what the current research shows, where the evidence runs out, and why sourcing and purity matter more than ever for anyone studying this compound.

U.S. Customs and Border Protection has flagged a sharp rise in seized peptide shipments moving through international mail facilities and ports of entry in 2026, a trend regulators tie to surging consumer demand for weight-loss and wellness peptides. For the research community, the enforcement data underscores a persistent problem: as demand climbs, so does the incentive to counterfeit. Here's what the seizure trends show, why counterfeits are proliferating, and how legitimate researchers can protect the integrity of their work.

Eli Lilly has filed six lawsuits against wellness and compounding vendors it accuses of selling retatrutide, its unapproved obesity drug candidate, to consumers under the guise of "research use only" peptide sales. Here's what the lawsuits allege and what they signal for the broader research peptide industry.

A major telehealth brand just signaled that peptides are going mainstream. Here's what Hims & Hers' 2026 peptide launch means for the research community and quality-focused buyers.

Peptides are everywhere in wellness culture right now, promoted for everything from muscle building to weight loss to smoother skin. But Stanford Medicine researchers say the excitement has outpaced the evidence. In a recent breakdown of the trend, pathology professors Katrin Svensson and Jonathan Long laid out what's actually known, what isn't, and why the biggest danger for most people isn't the peptide itself. It's where it came from.

When you're purchasing research peptides, one number matters most: purity. But what does "99.1% pure" actually mean? And how do you know a certificate of analysis (COA) is legitimate? In this guide, we'll walk you through peptide quality standards, how purity is measured, and what red flags to watch for when sourcing research-grade compounds.

A 2026 market-news look at West Virginia University pharmacy experts' call for stronger evidence behind the multibillion-dollar peptide industry, and why third-party-verified sourcing matters most for anyone doing research today.

BPC-157 remains one of the most discussed compounds in the peptide research community, but interest in it has outpaced the published science. Here's what the current evidence actually shows, and why purity and testing matter more for this peptide than most.

Tirzepatide is best known for its glucose- and weight-lowering effects, but a newly published study adds evidence for another benefit: a real reduction in serious cardiovascular events. Published in The British Medical Journal, it's one of the largest real-world looks yet at how tirzepatide performs on cardiovascular outcomes outside a clinical trial setting.