Browse every active peptide risk guide on Peptides Risks, sorted by newest first.
Copper Peptides (GHK-Cu) in Skincare: Topical Is Not the Same as Injected
GHK-Cu is a common skincare ingredient, and it is also sold in injectable vials. Why the evidence for a serum says nothing about injecting…
Collagen Peptides: What the Supplement Evidence Supports
Collagen powders are dietary supplements, which are not approved for effectiveness before sale. What the human trials on skin and joints measured, who funded…
Peptides and Drug Testing: What the WADA Prohibited List Covers
WADA bans peptide hormones and growth hormone releasing factors, and it names BPC-157 under non-approved substances. How the categories work, and why "not on…
Injection-Site Infections and Abscesses From Unregulated Peptides
Infection risk comes from the vial, the needle and how the product was made, not just the peptide: non-sterile manufacturing, contamination or shared equipment.…
Peptide Certificates of Analysis: What a COA Can and Cannot Prove
A COA reports purity for one sample, from one lab, on one date. What it does not test for, and why sterility and endotoxin…
How to Spot Counterfeit Ozempic and Other Fake GLP-1 Pens
The FDA has seized counterfeit semaglutide pens in the legitimate supply chain. The packaging details the agency and the manufacturer say to check, and…
“Research Use Only” Peptides: What the Label Means and Why It Is There
"Research use only" is wording borrowed from lab-test rules. The FDA has warned sellers that the label does not make a peptide sold for…
Are Peptides Legal? FDA Approval, Compounding Rules and What Changed in 2026
Some peptides are approved prescription drugs; most sold online are not approved for any human use. How the FDA's compounding bulk-substance categories work, and…
Melanotan II Side Effects: Moles, Nausea and Why It Is Not Approved
Melanotan II is sold as an injectable tanning peptide and is not approved by the FDA for any use. The side effects reported in…
GLP-1 Side Effects: Common, Serious, and When to Call a Doctor
Nausea and other stomach effects are the most common, and usually ease. Pancreatitis, gallbladder problems and the thyroid warning on the label are the…
Compounded GLP-1 Vial Mix-Ups: Why Units and Milliliters Cause Overdoses
The FDA has received reports of people hospitalized after measuring compounded semaglutide in the wrong units. How a multi-dose vial creates that risk, and…
Retatrutide Sold Online: The Risks of an Unapproved Trial Drug
Retatrutide is still in clinical trials and is not approved anywhere, yet vials are sold as research chemicals. Why trial results do not transfer…
Compounded Semaglutide vs Ozempic and Wegovy: What Changed After the Shortage
Compounders could copy semaglutide while it was on the FDA shortage list. The FDA declared the shortage over on February 21, 2025, and the…