Imagine a page offering help with weight or ageing. The broad name does not tell you which treatment it means.
A peptide is a tiny substance with parts linked in a short chain, rather like beads threaded together.
Insulin belongs to the peptide group; that group’s name alone cannot establish a product’s safety or whether it is legal.
FDA means Food and Drug Administration. The name of the drug matters more than the broad phrase “peptide therapy”.
An approved medicine
FDA approval means the agency judged that the drug works for a specific use and is safe enough for that use.
Semaglutide, sold as Ozempic and Wegovy, has FDA-approved forms for these uses, among others (September 26, 2026).
Ozempic injections and tablets help control blood sugar in adults with type 2 diabetes.
Wegovy injections and tablets help with weight loss and keeping weight off, alongside changes in food and activity.
Ask which approved use matches the exact medicine and the reason it is being offered to you.
A medicine made to order
A pharmacist or doctor can prepare medicine to suit a patient’s needs; this is called compounding.
As of September 26, 2026, compounded drugs remain without FDA approval.
Before a compounded drug reaches the market, FDA does not review how safe it is, whether it works, or its quality.
A made-to-order medicine can be lawful, but the type of maker and the ingredients matter (September 26, 2026).
One lawful route lets a licensed pharmacy or doctor prepare medicine for a specific patient who has a valid prescription.
A larger facility can instead sign up with FDA under a compounding law and make batches without a prescription for each named patient.
For a regular pharmacy, an ingredient must meet its official quality standard, a written set of quality rules, if one exists.
If none exists, it must be in an approved drug; otherwise it must be on FDA’s allowed ingredient list.
Ask the pharmacist to explain the full rules for this medicine, which route applies, and what permits its ingredients. Ask the prescriber why it is needed.
A product labelled for research
For weight-loss drugs sold for people, FDA warns about products marked “not for human consumption” or carrying a “for research purposes” label (September 26, 2026).
Those labels say the product is for a study, not for a person to take.
These products may be harmful, and their quality is not known.