Controlled Substance Market Size and Forecasts (2020 - 2030), Global and Regional Share, Trends, and Growth Opportunity Analysis Report Coverage: By Drug Class ( Opioids, Stimulants, Depressants, Cannabinoids ); Application ( Attention Deficit Hyperactivity Disorder, Pain Management, Depression, Sleep Disorder, Cough Suppression, Anxiety, Seizure, Others ); Distribution Channel ( Hospital Pharmacies, Retail Pharmacies, Online Pharmacies ), and Geography (North America, Europe, Asia Pacific, and South and Central America)