Due to the incredibly high levels of CBD in Cali Kush, its one of the best alternatives for natural pain relief. This strain is often prescribed for patients with epilepsy, anxiety, PTSD and seizures. Since the THC levels are very low at only 1%, it allows you to stay productive throughout the day while still being medicated. Cali Kush is the ‘go to’ medical strain for the some of the highest CBD levels in the world at 20%.