Peptide guides in plain words

Short answers to the questions people ask about peptides in the US, each with its sources. No doses, no sales.

Peptide Chooser editorial team. Every claim links to its source.

• Is BPC-157 legal in the US? What the FDA decided

  Not approved, the July 2026 FDA review, and what research-use shops are doing.

  Checked 2 Nov 2026

• Are peptides safe? Approved, cosmetic and research-use

  The four kinds of peptide and what safety data each one has.

  Checked 2 Nov 2026

• How to read a peptide COA (certificate of analysis)

  Who issues a lab report, what it tests and why it covers one batch.

  Checked 2 Nov 2026

• Compounded vs brand semaglutide and tirzepatide

  Pharmacy-made copies next to Wegovy and Zepbound, with clinic prices.

  Checked 2 Nov 2026

• What an FDA warning letter means for a seller

  What a letter is, what happens after it and why it is not a verdict.

  Checked 2 Nov 2026

• Peptides for hair loss: what works and what is marketing

  Finasteride and minoxidil next to copper peptides and injectables.

  Checked 2 Nov 2026