Tonight

GPs and pharmacists are raising concerns that drugs including codeine, oxymetazoline and antihistamines present significant dangers of becoming habit-forming, even addictive if not used correctly. Sam Holder examines a hidden dependence that can devastate lives and cause long-term health problems. He meets those struggling to come off drugs that can be bought in any high street pharmacy without a prescription, and we hear from specialists who warn of what can happen in extreme cases of overuse.