Tag: Nitro

Nitric oxide plays a crucial role in vasodilation, the process of widening blood vessels to increase blood flow. This mechanism is the scientific basis behind why many athletes and fitness enthusiasts consider if they should take nitro before exercise to improve their workout performance.

The FDA has recently advised consumers against inhaling nitrous oxide products, a substance often referred to as "nitro," due to severe health risks, including potential death. So, is nitro harmful? The term actually refers to several different substances with vastly different properties and safety profiles. This article breaks down each common form of "nitro" to clarify its specific health implications and risks.

The short answer is none for the standard variety, but the surprising exception is the specialty cold brew version. Many people assume Guinness has caffeine because its dark, roasted flavor profile is reminiscent of coffee, but this taste actually comes from roasted barley, not coffee beans. If you want to know exactly how much caffeine is in a Guinness Nitro and which products contain it, read on to get the full breakdown.