Users risk overdosing on heroin, which can lead to coma and death through respiratory depression. Other risks. This comprehensive guide The cannabis (or hemp) plant, Cannabis sativa L. (Canna-binaceae) is a single plant species, but exists in many different biological, chemical and/or morphological varie-tiesAdvertising – Teens see countless messages – both in print and on TV – advertising the benefits of drugs and medicationsInternet – Teens can find information on any kind of drug online and,