What instruction should the nurse give to a patient with bronchoconstriction regarding the use of ephedra?

When instructing a patient with bronchoconstriction about the use of ephedra, advising them to avoid the consumption of caffeine is crucial. Ephedra is a stimulant that can increase heart rate and blood pressure, and caffeine has similar stimulating effects. The combination of these two substances can potentially lead to increased cardiovascular strain, particularly in individuals with respiratory conditions. Caffeine may augment the effects of ephedra, leading to increased risk of side effects such as palpitations or anxiety, which can worsen symptoms in patients with respiratory issues.

In contrast, while monitoring blood pressure is important for any patient using stimulants, it does not directly address the specific concern of combining caffeine with ephedra. Additionally, increasing caffeine intake or considering the use of herbal supplements may not be safe or advisable given the potential for negative interactions or exacerbation of symptoms. By focusing on avoiding caffeine, the nurse provides the patient with a clear and practical guideline to minimize risks associated with the use of ephedra in the context of bronchoconstriction.