Functional mushrooms are completely safe to consume with no real known side effects. Not only are they extremely safe, they are known to provide an abundance of amazing health benefits and adaptogenic properties. These include strengthening the immune system, reducing inflammation, improving gut health, increasing stamina, aiding in focus, and more. If you have any concerns, please consult a medical professional prior to consuming. We use the highest quality and one of the most absorbable forms of functional mushrooms in Fringe bars. All of our mushrooms used are a 100% pure and organic powder extracted through the dual-extraction method.