Which instruction should a nurse include when teaching a client about taking antihistamines?

Antihistamines are commonly used to alleviate allergy symptoms, but they can also cause sedation and impair cognitive function due to their effects on the central nervous system. Therefore, it is important for clients to understand the potential risks associated with their use, particularly regarding activities that require alertness, such as operating machinery or driving.

When taking antihistamines, individuals may experience drowsiness, which can increase the risk of accidents or injuries. It is essential for clients to be informed about this side effect so they can take the necessary precautions, such as avoiding these activities until they know how the medication affects them.

By educating clients on this aspect of antihistamine use, the nurse helps promote safety and encourages responsible medication use. This understanding is vital for the client's well-being and for preventing any adverse outcomes during the treatment period.