Where to check an answer that sounds too broad

For the person, start with the licensing board

Use the directory from the Federation of State Medical Boards to find links to medical boards in states and territories.

It is a group of medical licensing boards. Use the directory for the doctor’s public record, then ask about anything that does not match.

FDA means Food and Drug Administration. A doctor’s record and a pharmacy’s record belong to different checks.

A separate FDA page links you to the online pharmacy licence lookup for your state.

For the product, distinguish approval from listing

Ask for the full medicine name, how it is taken, and the approval record the claim relies on.

A National Drug Code, often shortened to NDC, is a product number used in FDA’s drug listings.

If an offer presents an NDC number to prove approval, request the approval record itself.

FDA says having that number does not mean it has approved the medicine.

Registering a business or listing a drug also does not establish FDA approval or permission to market it.

For a changing rule, keep the date attached

You can search FDA’s warning letters to companies by company name.

A letter describes the concerns FDA raised at that time. Later messages between FDA and the company may change whether those concerns still apply.

Read the date and look for a later reply or closeout notice. A closeout notice says FDA considers the problems in the letter addressed. An old letter alone may leave that answer open.