Within the commercial side of a company there are a large number of people working towards promoting the medicines their company produces.
Prescription medicines are not allowed to be advertised to the general public in the UK. Instead they must be promoted to doctors, who then choose whether to prescribe them.
Adverts in medical journals, conferences and presentations tell doctors about the medicine, but most information comes from medical representatives involved in sales and marketing. Medical reps visit doctors on a regular basis to tell them about their company’s new products, and to answer any questions they have.