This sativa-dominant strain tastes just like the name: sweet vanilla with hints of kushy earth flavors. A sense of relaxed and creative euphoria from Root Beer Kush are good for stress reduction while feelings of happiness are good for those with depression. Root Beer Kush can cause sleepiness, so it is best used in the evening. This strain can help with nausea and insomnia. As far as pain, Root Beer Kush works best against headaches.