Last week, FDA published a final guidance for pharmaceutical manufacturers that plan to incorporate physical–chemical identifiers (PCIDs) in solid oral dosage forms as an anticounterfeiting strategy. The guidance defines a PCID as “a substance or combination of substances possessing a unique physical or chemical property that unequivocally identifies and authenticates a drug product or dosage form.” PCIDs include inks, pigments, flavors, and molecular taggants.

Read more about the FDA’s published guidance on Physical-Chemical Identifiers at