The preparation on the label
Compounding means a medicine is prepared
“Made for you” can sound reassuring. The useful question is why this preparation is needed and who is making it.
- Compounding
- Preparing a medicine by mixing or changing ingredients, rather than supplying a finished manufactured product.
The letters FDA name America’s drug regulator, the Food and Drug Administration.
Compounded medicine carries no FDA approval, according to the position checked September 26, 2026.
Before marketing, a compounded product gets no FDA review of how well it works, what harm it might cause, or its quality.
A patient’s need is the point of the preparation
If an approved medicine cannot meet a patient’s need, compounding may have a role.
A dye allergy is an example the FDA gives of a need an approved product may not meet.
Ask what need the proposed preparation addresses for you. Ask the maker’s name too: which pharmacy or facility is preparing it?
A prescription does not settle every ingredient question
For the ingredients retatrutide and cagrilintide, the federal position checked September 26, 2026 is explicit: the FDA says neither may be compounded.
The agency has not established safety or benefit for either ingredient in any condition; neither appears in an approved medicine.
Ask the person ordering the medicine to name the exact ingredient and explain which rule allows it to be prepared.
Adding a vitamin may still mean copying an available medicine
The FDA policy checked September 26, 2026 says a semaglutide injection with added vitamin B12 can still count as copying an available semaglutide medicine.
This applies when it is given the same way and has the same or a similar strength as the available product.
Federal law limits pharmacists and doctors making these copies repeatedly or in large amounts.
That copying restriction may exclude a changed medicine if its prescriber judges the difference to be significant for the individual patient.
A cheaper price is not enough on its own; the person prescribing must document both the change and its importance for that patient.
A check dated September 26, 2026 found neither semaglutide nor tirzepatide injections on the national FDA shortage list.
A pharmacy’s empty shelf tells you about local stock; it does not place that medicine on the FDA’s national shortage list.
Ask what change your health requires, why it matters for you, and whether it meets the rules for making this medicine.