A chain of small parts
Proteins are built from parts called amino acids; a short string of those parts is a peptide.
Insulin is a familiar peptide medicine.
Knowing that something is a peptide tells you about its makeup, not what it will do for you.
Source AThe treatment needs a full name
In September 2026, U.S. drug law did not approve or ban treatments as one group called “peptide therapy”.
The medicine’s own status matters: is it approved, made to order under the rules, or an unapproved drug offered for people to take?
Have the service identify the medicine by name and tell you its form: tablet, injection or something else. “A peptide plan” leaves too much unsaid.
Source ASeparate the kinds of product
For September 2026, sort the products into these groups: approved medicines, custom preparations, and drugs sold for people to use without approval.
A made-to-order drug is called a compounded medicine. Approved medicines undergo review by the U.S. Food and Drug Administration, abbreviated FDA.
FDA review does not happen before a compounded medicine reaches the market, as of September 2026.
Source BNotes behind the answers
- Source A — FDA: Why the product mattersFDA compounding explanationBack to answer A
- Source B — FDA: Medicines made to orderFDA compounding explanationFDA on compounding qualityBack to answer B