Final answer:
Flushing is a common side effect of nicotinic acid (Niacin), used for coronary artery disease. Clients can be advised to take aspirin before the medication and ensure they are taking it with meals, after consulting with their physician.
Step-by-step explanation:
The client with coronary artery disease who is prescribed nicotinic acid (Niacin) and complains of flushing should be informed that this is a common side effect. The intervention that should be considered a priority by the nurse is to discuss that this side effect is typical and usually diminishes over time. In some cases, it can be helpful to advise the client to take aspirin 325mg about 30 minutes before taking the niacin to help reduce this flushing effect, as long as they have consulted with their physician about this strategy and are not at risk for aspirin-related side effects. It is also beneficial for the client to take the medication with meals to potentially lessen side effects, but this should not replace the advice regarding aspirin unless specified by their healthcare provider.