Tag: Adenosine

Approximately 2.7 million Americans are affected by atrial fibrillation, a common type of arrhythmia often leading to a rapid and irregular heart rate. For specific cardiac emergencies, understanding **what medication lowers heart rate immediately** is crucial, though it must always be administered by a healthcare professional.

While caffeine famously blocks adenosine receptors to produce its stimulant effect, early animal research suggests agmatine might specifically dampen some of caffeine's stimulant properties in a dose- and sex-dependent manner. This surprising interaction highlights the intricate ways different compounds can influence neurochemistry, but human data remains sparse.

Intravenously administered adenosine has an exceptionally short half-life of less than 10 seconds, making it one of the most rapidly cleared drugs from the human body [1.4.1, 1.4.3, 1.4.4, 1.4.5]. Understanding the concept of 'half-life' is crucial to answering the question: what drug leaves the body the fastest?