What does "q.o.d." signify in medication instructions?

"q.o.d." is an abbreviation derived from the Latin phrase "quaque altera die," which translates to "every other day." This term is commonly used in medication instructions to indicate that a medication should be administered on alternating days, rather than daily. It is important for medication aides and healthcare providers to clearly understand these abbreviations to ensure proper patient care and medication schedules. In this context, knowing the correct interpretation helps prevent medication errors that could arise if the frequency of administration is misunderstood. The other options represent different frequencies or conditions for medication administration, but they do not accurately reflect the meaning of "q.o.d."