As a rule, these schedules are amended by way of ordinances having the force of law, issued by the Federal Government which was authorized to do so by the legislator (cf section 1 subs. 2BtMG). In urgent cases, however, the Federal Ministry of Health has the sole authority to include substances and preparations which are not medicinal products into the appropriate schedules for a period of one year if this is necessary due to the extent of misuse and the actual danger to health (cf section 1 subs. 3).