The GPs point is that it is a stimulant that increases performance at the cost of heart health. Were we to make it legal while at work, people who were working

The GPs point is that it is a stimulant that increases performance at the cost of heart health. Were we to make it legal while at work, people who were working without it would be at a disadvantage, prompting a "normal" worker to increase productivity at the expense of their health.