Which of the following is NOT an administration error?

Total parenteral nutrition is administered intravenously
Ear medication placed in the eye
Intravenous medication injected intramuscularly
Patient forgot to take his or her medication

Patient forgot to take his or her medication

Rationale: A patient forgetting to take his or her medication is not an administration error, since administration of the drug did not occur. It is classified as a compliance error. The other answer choices are all examples of drug administration errors.