A VFD is required for all drugs that are considered “medically important antibiotics”, or
MIAs. MIAs are the medicine family used in human health. The scientific community
is concerned that, over time, continued use of MIAs in food animals will lessen their
effectiveness in treating human disease. As a result, the FDA is strictly limiting their
use as feed-based animal drugs. A VFD drug is limited to use under the professional
supervision of a licensed veterinarian.
