August 2026 FDA Warning Letters to Peptide Sellers: How “Research Use Only” Is Being Read
Four warning letters dated August 24, 2026 spell out when FDA treats a research-use-only peptide as an unapproved drug. The label is not the test.
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ADA 2026: The Multi-Agonist and Oral Incretin Readouts, Summarized
ADA 2026 delivered phase 3 data on a triple GLP-1/GIP/glucagon agonist, a dual agonist, CagriSema and two oral agents. Here is the map.
FDA’s 2026 Move to Bar Bulk Compounding of GLP-1 Drugs: What It Means for Research Suppliers
In 2026 FDA moved to end bulk compounding of GLP-1 drugs and began citing research-labeled sellers of the same peptides. The two stories are one story.
Triple GLP-1/GIP/Glucagon Agonists: Where the Research Stands
How a single peptide came to activate three proglucagon-family receptors, what phase 2 trials of the class reported, and what is still unknown.
What Are GLP-1 Peptides? Incretin Biology for Researchers
The biology behind GLP-1: where it comes from, what it does, why the native hormone lasts two minutes, and how synthetic analogues were built to last a week.
GLP-1 vs. GIP vs. Glucagon Receptors: Why Multi-Agonism Emerged
Three related receptors, three different jobs. How the biology of GLP-1, GIP and glucagon receptors led from selective agonists to dual and triple agonists.
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