What does "AU" signify in a prescription?

The abbreviation "AU" in a prescription context signifies "both ears." This term comes from the Latin phrase "auris utraque," which means "each ear." It is commonly used in prescriptions related to ophthalmology or otology, where a healthcare professional may need to indicate treatment that applies to both ears simultaneously.

Understanding the use of this abbreviation is important in ensuring that the correct dosage or treatment is provided to the patient, especially when it involves ear-related conditions. In practice, precise communication in prescriptions helps prevent misunderstandings that could lead to improper administration of medication.