Look beyond the small print
In the US, the Food and Drug Administration reviews medicines; its short name is FDA.
As of September 2026, FDA warned about unapproved weight-care drugs marketed for people despite research-only labels.
The agency said these products had unknown quality and could harm health.
As of September 2026, federal law required a valid prescription to dispense a prescription drug.
Someone licensed to prescribe gives an order for medicine; that order is a prescription.
In letters to sellers, FDA pointed to health claims on their websites and water sold for mixing injections. The agency said these showed that the products were meant for people to use.
Those letters state FDA’s accusations against particular businesses. They are letters from the agency, not decisions by a court.
Not every experimental name is an available medicine
Making medicine to meet an order is called compounding.
As of September 2026, FDA said compounding with retatrutide or cagrilintide was barred by federal law.
No FDA-approved drug contained either substance, and neither had a finding of safety and effectiveness for any condition.
FDA lists the lack of screening, prescription, or a doctor to answer later questions among concerns with online weight-care offers.
- What is the exact product, rather than its nickname?
- If it is approved, where can I check that? If it is made to order, what rule allows this pharmacy to make it for me?
- Who assesses my health before any prescription?
- Who answers questions after the medicine arrives?
Leave mixing guides and online calculators out of your decision. The next conversation is with a clinician or pharmacist about the product itself.
Notes behind the answers
- FDA · research-labelled weight-care products
The source for the research-label concerns and the retatrutide and cagrilintide statements.
- Federal law · prescription medicines
The source for the requirement to dispense prescription medicine on a licensed prescriber’s order.
- FDA · intended human use in an enforcement letter
Read why FDA saw health claims and mixing water as signs that a product was meant for people. This letter states the agency’s accusations, not a court decision.