What is a common side effect of cold/flu medications containing Ephedrine?

The commonly recognized side effect of cold and flu medications that contain Ephedrine is raised blood pressure. Ephedrine is a sympathomimetic drug that stimulates the central nervous system (CNS) and has vasoconstrictive properties, leading to an increase in both heart rate and blood pressure. This is especially relevant for individuals who may have pre-existing hypertension or cardiovascular conditions, as Ephedrine can exacerbate these issues.

The use of this medication can also lead to increased cardiac output as the heart works harder to pump blood against the constricted blood vessels, further contributing to elevated blood pressure. Understanding this side effect is essential for healthcare professionals and exercise physiologists, particularly when assessing the cardiovascular safety of exercising individuals who may be using such medications.