Fact check
A prescription answers only part of the question.
Ask why the doctor chose this medicine for you. Then ask whether the medicine itself has been checked, and what those checks show.
The assumption
A prescription means the drug has been approved.
The answer
The prescription and the product need separate checks.
The person allowed to order medicine for you writes a prescription. In September 2026, having that order did not mean the US government had approved the medicine.
Ask what kind of product it is
The US Food and Drug Administration, known as the FDA, handles medicine approval. Its checks concern whether medicines work, their safety and how well they are made.
- A medicine with FDA approval
Take semaglutide (Ozempic, Wegovy), a peptide medicine, as an example. In the FDA’s September 2026 medicine records, Ozempic has approval to treat type 2 diabetes, a condition with high blood sugar; Wegovy has approval for weight loss, among other uses.
A peptide is a short chain of the small building pieces found in proteins. In US rules dated September 2026, approval is for a named medicine and particular uses; calling something a peptide does not give it approval.
- A medicine made for a patient
The pharmacy or doctor prepares a medicine to meet a particular need; that work is called compounding.
Compounded medicine has no FDA approval, as the US record stood in September 2026.
For compounded medicine, there is no FDA check before sale on how well it works, how well it was made or its safety.
Under September 2026 US rules, a state-licensed pharmacy making medicine for an individual patient needs a valid prescription in that patient’s name. A prescription alone is not enough; the limits on copying ready-made medicines, explained below, also apply.
Sometimes a patient has a medical need that a ready-made, approved medicine cannot meet. The FDA’s September 2026 explanation says compounding may have a role in meeting that need.
- A bottle labelled for research
Some bottles sold online say “research-only”, meaning they are labelled for experiments rather than for treating people.
In its September 2026 advice, the FDA urged people to avoid certain weight-loss drug products sold for people to use even though their labels said they were for research. The agency said their quality was unknown and they might cause harm.
These were products sold to people with instructions on how much to take, despite the research wording on the bottle.
Why does the medicine need to be made differently for you?
Under US rules dated September 2026, pharmacies and doctors face limits on regularly making medicines that are essentially the same as ones already sold ready-made.
An exception can apply if the person writing your prescription identifies an important difference for your medical need between the medicine made for you and the ready-made version. A cheaper price by itself does not meet this exception under the September 2026 rules.
Ask the doctor what would be different about the medicine made for you, and why you need that difference. Why would a ready-made medicine not meet that need?
Look at the cost beyond the headline