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The latest from The Peptide Brief.
Three Million UK Adults Now Use Weight Loss Jabs — And Supermarkets Are Paying Attention
New analysis suggests GLP-1 weight loss treatments including Mounjaro and Wegovy have reached three million UK adults, with consulting firm…
GLP-1 Drugs and Alcohol: Why Researchers Are Taking the Evidence More Seriously
A review published in the Journal of Clinical Investigation in September 2026 brings together growing evidence that GLP-1-targeted medicines may…
Retatrutide vs Mounjaro: How Do the Two Eli Lilly Weight Loss Jabs Actually Compare?
Both retatrutide and Mounjaro come from the same manufacturer, but they work differently and sit in very different places in…
Retatrutide and the Fitness Community: What the ‘New Steroids’ Warning Actually Means
Medical professionals are raising concerns that retatrutide — a powerful triple-receptor weight-loss medicine still in clinical trials — is being…
Eli Lilly Sues Six Companies Over Unlicensed Retatrutide Sales — What UK Users Need to Know
Eli Lilly has filed a US federal lawsuit against six companies selling products marketed as retatrutide, a medicine that has…
Retatrutide Early Access Is Now Open in the US – But UK Patients Are Not Eligible Yet
Eli Lilly has confirmed a formal early access programme for retatrutide in the United States, but the criteria are deliberately…
Six Cases of Liver Damage Linked to Grey Market Retatrutide: What UK Patients Need to Know
Reports of serious liver toxicity linked to unverified products sold as retatrutide are circulating in patient communities right now. Eli…
Retatrutide Phase 3 Results Are In: What Do They Actually Mean For UK Patients?
Eli Lilly has announced positive Phase 3 trial results for retatrutide, and online communities are buzzing with questions about what…
The FDA Just Voted To Allow Broader Access To BPC-157 And GHK-Cu. Here Is What That Actually Means (And What It Does Not)
An FDA advisory panel vote on several peptides is generating significant discussion in UK communities right now. People want to…