The treatment with Cannabis and its effects vary from one person to the next. Because of the vast differences between patients, it is necessary to personalize the treatment to the patient’s needs – gradually increasing the dosage while taking into consideration the symptoms they wish to treat, the medication the patient is taking, his age, adapting the times of taking the Cannabis during the course of the day, accompaniment and answering questions, as well as dealing with side effects. The precise and optimal dosage will be determined only several weeks after the beginning treatment.