Compounded primer

Made-to-order medicine is real medicine, but FDA does not check it first

Compounding can meet a patient need. It is not the same thing as FDA approval.

WHAT IT MEANS

A pharmacy or doctor prepares the medicine

When a pharmacist or doctor mixes or prepares a medicine for one patient, rather than dispensing something a drug company already finished, that is compounding.

For example, a patient may be allergic to a dye in the approved product, or unable to swallow a tablet.

WHAT IT DOES NOT MEAN

FDA does not vet it ahead of sale

As of September 2026, FDA did not review compounded drugs for safety, effectiveness or quality before they were marketed.

That statement applies even when a pharmacy is properly licensed. Licence and product approval answer different questions.

TWO KINDS OF MAKER

A pharmacy making it for you, or a larger plant making batches

As of September 2026, federal law allowed two kinds of compounding. In the first, a state-licensed pharmacy or doctor made medicine for one named patient. The law calls this 503A. In the second, a larger facility registered with FDA made germ-free (sterile) medicine in batches, many doses at a time. Those batches were not tied to one patient’s prescription. The law calls this a 503B outsourcing facility.

As of September 2026, a 503B facility was held to the same manufacturing quality rules as a drug plant, and FDA sent inspectors. An ordinary 503A pharmacy was not bound by those plant-level rules. Registering with FDA still did not mean FDA approved anything it made.

You may see 503A or 503B on a website or label. They are only names for parts of federal law, not quality grades. What helps you is the pharmacy’s own name, so you can check its licence.