Medical cannabis consists of a specially cultivated hemp plant that can be prescribed by a doctor as an anesthetic in certain cases for seriously ill patients. Only if other, more common forms of therapy are not possible or lead to severe side effects and an early improvement through cannabis is in sight, a doctor may prescribe cannabis at his own discretion. The cannabis used is subject to strict legal requirements and must have a stable THC value to ensure effect and dosage. The contained THC can have various positive effects on the well-being of patients.