We can conclude that the International Convention on psychotropic substances (1971) itself offers full opportunity for the use and selling of natural materials, plants or animals which by nature contain hallucinogenic substances. When a safe social setting is guaranteed, or risk for public health and public order is otherwise minimized, limitations by the government of the use of hallucinogenic substances should be defined as contrary to constitutional rights, such as the freedom to manifest one’s religion or personal conscience and self-determination and respect for one’s private life. The road to get this claim rewarded will however be a long one.