Editorial: Approved, Unapproved, Legal, and Illegal Drugs
Terminology is oftentimes confusing. What is the difference between an "FDA-approved drug," an "Unapproved drug," and an FDA "Unapprovable drug"? Which ones are legal in the U.S.? Can I compound FDA-approved, FDA-unapproved, and FDA-unapprovable drugs?
An FDA-approved drug is one in which the manufacturer or sponsor has received an approval letter; an official communication from the FDA to an NDA sponsor that allows the commercial marketing of the product.
An unapproved drug is one that has not undergone the extensive FDA review process with subsequent approval. There are still a number of unapproved drugs that are legally manufactured and marketed in the U.S. These are the Pre-1938 drugs and have been addressed in this column previously. This category also includes all compounded preparations or modified commercial products.
A company sponsor of a drug product that has undergone the FDA review process and fails for some reason is issued an "Unapproval drug" letter. This may be subsequently changed with an additional application/information, etc.
The public sometimes gets the idea or impression that unapproved drugs are "illegal" and that only "FDA-approved drugs" are legal to use in the U.S. FDA approval is required for drugs that are going to be manufactured and marketed by a manufacturing facility in the U.S. Compounded preparations are prepared pursuant to a prescription (legally authorized prescription by the state) issued by a prescriber (legally authorized to prescribe by the state) for a patient and compounded by a pharmacist (legally authorized by the state to practice pharmacy).
FDA-approved drugs are obviously legal (and can even be compounded under certain conditions but not if patented). It should be noted that the FDA does not approve an active pharmaceutical ingredient (API) by itself; the FDA approves a final drug product ready for administration. The NDA requires extensive work on the specific formulation for stability, etc. and detailed labeling specific for the commercial product.
Unapprovable drugs by the FDA can be compounded unless patented. As an example, if an NDA is rejected by the FDA for marketing by a manufacturer, that API may still be suitable for compounding for specific patients. One cannot, however, compound drugs that are on the "Drugs Not to Be Compounded" list.
All of the above, done appropriately and within the laws and regulations of the state boards of pharmacy, is legal. It may be done in hospitals, clinics, independent and chain pharmacies, specialty compounding pharmacies, etc. As we all know, all compounded preparations are unapproved drugs; this includes intravenous admixtures, cancer cocktails, pediatric formulations, flavoring of preparations, nuclear pharmaceuticals, and all the nonsterile and sterile compounding that occurs daily. These preparations are all legal, and this activity is governed by the state boards of pharmacy. Again, compounded prescriptions are prepared as the result of a prescription from a prescriber and are for a specific patient, and not for "manufacturing and marketing" to the public.
Loyd V. Allen, Jr., PhD, RPh
Editor-in-Chief
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