For whom is it not recommended to use medical Cannabis?

It is recommended to avoid the use of Cannabis for those who have a history of psychiatric illness or psychiatric heredity, pregnant and nursing women, or those with a history of addiction or drug abuse. There are other populations where it is important to carefully consider the giving of medical Cannabis and they include youths under the age of 18, people with severe heart and vascular diseases, people with kidney or liver problems, the elderly depending on their functional state, patients with a history of medication or other substance addictions, patients who take sedatives or sleep inducing drugs, and patients who consume alcohol in large quantities.