Mukti Jain Campion asks why India's people have virtually no access to medical morphine.
Opioid prescriptions have rocketed in the UK in recent years - how worried should we be?
Professor Andrew Hussey explores whether heroin use creates a particular aesthetic style.
Sally Marlow investigates why many jazz musicians turned to heroin in the post-war period.
Did marketing help fuel the UK's opioid addiction 'crisis'?
Sybil Ruscoe follows the British opium poppy harvest from field to pharmacy.