Practical articles organized by catalog use, documentation review, custom planning, and research procurement.
Choose a category to narrow the published guidance.
13 articles
A 2024 study found that TB-500 rapidly breaks down into a smaller metabolite, Ac-LKKTE. This may mean the actual active molecule is not TB-500 itself. This article explains the implications.
Read guidance →
In 2026, the FDA and state regulators tightened their oversight of "research use" peptides at the same time. This article reviews the FDA warning letters, new rules in Ohio and Alabama, and what these changes mean for sellers and buyers.
Read guidance →
These products are sold as a menu of interchangeable “GH peptides,” but the evidence behind each is very different. This article uses a comparison table to review CJC-1295, Ipamorelin, tesamorelin, sermorelin, MK-677, and growth hormone.
Read guidance →
None of the three components in GLOW are approved for human use. BPC-157 and TB-500 are on the FDA Category 2 list, and the injectable GHK-Cu nomination was withdrawn in April 2026. This article reviews the regulatory situation as of September 2026.
Read guidance →
Cagrilintide is not approved in any country. In September 2026 the FDA stated unequivocally that retatrutide and cagrilintide cannot be compounded under federal law, and in March it issued warning letters to suppliers. This article explains why "research use only" labels don't provide cover, and who enforcement actually targets.
Read guidance →
In August 2026, Lilly filed six lawsuits against U.S. companies selling retatrutide and reported over 200 entities. This article explains the targets, the legal risk of RUO labels, and the FDA’s enforcement logic.
Read guidance →
GHK-Cu is one of the most studied copper-binding peptides, with strong human data for topical use but very little evidence for systemic injection. This article reviews its mechanism, clinical evidence, and boundaries.
Read guidance →
Some of the more unusual findings in the BPC-157 literature involve the interaction between gastrointestinal stability, neurotransmitter systems, and neural signaling pathways. This article explains the neurological and mood effects reported by users, and why these observations still require research.
Read guidance →
Peptides don’t only exist in the human body. Plants also rely on peptides for long-distance cell communication, regulating root growth, leaf development, and stress responses. This article explains the signaling mechanisms of plant peptides and their potential applications in agriculture.
Read guidance →
A practical checklist for identifying a catalog record and giving the review team enough information to answer accurately.
Read guidance →
Understand the difference between a catalog statement, a mapped historical file, and documentation for the material currently being quoted.
Read guidance →
The sequence, modification, purity, quantity, analytical, destination, and timing details that make a custom request reviewable.
Read guidance →
A controlled way to compare identity, specification, evidence, destination requirements, and lead time before a purchase decision.
Read guidance →