<p>Respected local solicitor Andrew is sent to prison - but the devastating impact of the side effects of his Parkinson’s medication continues.</p><p>BBC Investigations Correspondent Noel Titheradge has been contacted by more than 200 people about their experience of behavioural side effects of dopamine agonist drugs.</p><p>So who’s taking responsibility? We hear from pharmaceutical companies, regulators and doctors. There have been significant developments in the way these drugs are used - but what effect have they had?</p><p>Details of organisations offering help and support with some of the issues raised are available at bbc.co.uk/actionline.</p><p>If you have any concerns about medication you’re taking, speak to your doctor.</p><p>Presenter: Noel Titheradge Producer: Lucy Burns Editor: Matt Willis A BBC News Long Form Audio production</p>