Decide · Forks in the road
Three routes that are not interchangeable
The same search result page may mix all three. The checks are different for each route.
Route: an approved product
As of September 2026, semaglutide (Ozempic, Wegovy) and tirzepatide (Mounjaro, Zepbound) have FDA-approved products in the United States. Both are peptide medicines. Ozempic and Mounjaro are approved for type 2 diabetes, and Wegovy and Zepbound for weight management, which is why they turn up in a peptide search.
Approval belongs to a specific product, form, and use. It does not carry over to other products that share a similar name.
Route: a made-to-order medicine
When a pharmacy compounds, it prepares the medicine itself instead of handing over a factory product. As of September 2026, compounding can be lawful in two main ways. A pharmacy licensed by its state can prepare a medicine for a single, named patient holding a valid prescription. A larger FDA-registered plant, called an outsourcing facility, can make batches under the quality rules drug factories follow. Other federal and state conditions also apply.
As of September 2026, a compounded medicine is not FDA-approved. No FDA review of that particular medicine happens before sale.
Ask why an approved product cannot meet the individual need, and get the pharmacy’s name.
Route: a research-labelled chemical
As of September 2026, FDA warning letters have called such chemicals unapproved drugs even when the label says “research use only.” The reason is the seller’s own website: pages saying the chemical helps with weight, healing, or hormones show it is being sold for people to take. The letters go to the sellers.
Some sellers also offer mixing water, used to turn the powder into a liquid for a shot, a dosing guide that says how much to inject, or a dose calculator. The FDA has said that selling these beside the vial shows the seller expects people to inject it.