Practical peptide guides
Clear, evidence-based guides for understanding peptides, navigating the regulatory landscape, and making informed decisions.
Retatrutide Is Not Compoundable
FDA says retatrutide cannot be used in compounding under federal law. What that means for trial-only access and why research-use vendors are not equivalent.
How to Reconstitute Peptides
A clear, safety-first guide to preparing lyophilized peptides. What you need, how to do it, and what to watch for.
What Are Peptides?
A plain-language primer on what peptides are, how they work, and how they differ from proteins, hormones, and drugs. The foundation for everything else on this site.
Peptide vs. Small Molecule vs. Biologic
A plain-language guide to the difference between peptides, small molecule drugs, and biologics — and why the category matters for evidence, manufacturing, approval, and substitution.
How to Verify a Certificate of Analysis
43% of gray-market peptides fail purity testing. A practical guide to reading COAs, spotting red flags, and verifying lab results before you trust a product.
How to Evaluate a Peptide Clinic
Not all peptide clinics are equal. A scorecard for evaluating telehealth providers, compounding pharmacies, and prescribers — with red flags to watch for.
What Is 'Ozempic Face'?
Separating viral speculation from dermatological evidence. What actually causes facial changes during GLP-1 weight loss, whether the drugs are uniquely responsible, and what research says about prevention.