Final answer:
The nurse should instruct the client to avoid consuming alcohol while taking buspirone.
Step-by-step explanation:
The nurse should include the instruction to avoid consuming alcohol while taking buspirone. This is because alcohol can increase the sedation effects and drowsiness caused by the medication, potentially leading to an increased risk of accidents and impairing the client's ability to perform tasks safely. Therefore, it is important for the client to abstain from alcohol while on this medication.