The peptide
field guide

A word to know

Generic: an approved version, with a specific name.

Ask what “generic” refers to when the word appears in an offer.

What the word means

Reviewing medicines is work the Food and Drug Administration (FDA) does for the U.S. government. Compounded means made to order.

A generic medicine is approved by FDA as a version of a brand-name drug.

FDA considers “generic” misleading when used to describe a compounded version of an approved medicine, as of September 2026.

The answer depends on the medicine

As of September 2026, semaglutide is used for type 2 diabetes as Ozempic and for weight management as Wegovy.

Tirzepatide’s uses, as of September 2026, are type 2 diabetes under the name Mounjaro and weight management under the name Zepbound.

As of September 2026, the United States had no approved generic for either semaglutide or tirzepatide that could legally be sold.

Generic liraglutide did have U.S. approval, including versions for weight management, as of September 2026.

Approval does not establish that a particular pharmacy has the medicine in stock.

Bring the exact drug name to the conversation. Ask about that product, rather than treating every peptide alike.

Ask for the product behind the word

Request the full medicine name and the product the service plans to use. Ask whether the service means an FDA-approved generic medicine or a medicine made to order.

Return to FDA review →

A question to keep

Is this an approved generic medicine or one made to order?