What is the purpose of a medication's "auxiliary label"?

The purpose of a medication's "auxiliary label" is to provide additional information on usage and precautions that may not be included on the primary labeling of the medication. These labels often convey important instructions or warnings that enhance patient safety by informing them of special considerations, such as "Take with food," "Avoid sunlight," or "Do not operate heavy machinery." This extra information helps ensure that patients understand how to use the medication effectively and safely, addressing potential risks or specific usage instructions that may not be inherent in the medication’s name or primary FDA-approved labeling.

In contrast to other options, while dosage information may be a crucial aspect of medication administration, it typically falls under the main labeling rather than auxiliary labeling. Enhancing the medication's effectiveness is not a function of the auxiliary label; rather, it serves as a supplementary tool for safe and proper usage. Additionally, the expiry date is also primarily indicated on the main packaging, not on auxiliary labels.