Tag: Dose dependent effect

Atropine is a powerful anticholinergic medication, primarily known for its use in treating symptomatic bradycardia, where it functions by increasing the heart rate. However, the effect of atropine on a person's heart rate is unexpectedly complex and depends heavily on the dosage administered.

Fact: The effect of epinephrine (also known as adrenaline) on the body is heavily dependent on the dose administered, which means it can be either a vasoconstrictor or a vasodilator. This nuance is critical to understanding how and why this powerful medication is used in various medical emergencies, addressing the question: is epinephrine a vasoconstrictor, or is its action more complex?