Controlled Substance Market, By Drug Class (Opioids, Stimulants, Depressants, Hallucinogens, Anabolic Steroids and Others), By Application (Pain Management, Anxiety, InsoBnia, Cough Suppression, Attention-deficit/hyperactivity disorder (ADHD), Narcolepsy and Others), By Sales Channel (Hospitals & Clinics, Pharmacies and Others (Academic & Research Institutes, etc.)), By Geography (North America, Latin America, Europe, Asia Pacific, Middle East & Africa)