Lucid University — mushroom coffee safety

Mushroom coffee has become one of the most popular functional beverages around, but before you switch your morning cup, it's worth asking: what are the side effects of mushroom coffee? The short answer is that it's well tolerated by most people, but there are a few things to know — especially around caffeine, digestion, and how it interacts with certain conditions. Here's an honest, research-informed look. Editorially reviewed for accuracy. Last updated: August 2026. Quick answer: Most mushroom coffee side effects are mild and tied to its caffeine (jitters, faster heart rate, trouble sleeping) or to digestion (nausea or loose...