I love all the Four SigmaFoods products, but reishi is my favourite. I travel a lot for work, which often means that I face several different time zones within a relatively short period of time. I have found reishi very helpful to deal with the resulting jetlag and in reducing my stress levels. I always carry instants with me on a plane and the packaging couldn´t be more pracktical. After a cup of reishi I can sit back and relax and maybe also catch some sleep.