Pharmaceutical marketing influences doctor prescribing habits

A systematic review of 93 studies has found that pharmaceutical marketing—including gifts, meals, payments, and promotional visits—significantly influences physician prescribing behavior. The research, published in the Cochrane Database of Systematic Reviews, indicates that doctors who receive such incentives tend to prescribe more medications, incur higher costs, and are more likely to choose treatments that deviate from official medical guidelines.

The analysis, led by researchers from the University of Sydney and York University, evaluated data from 82 studies in the United States and 11 from Europe and the United Kingdom. The findings suggest that these promotional activities can lead to inappropriate prescribing, potentially exposing patients to drugs that are unnecessary, more expensive, or carry higher risks of side effects.

Experts note that conflict-of-interest policies designed to restrict or manage interactions between drug companies and healthcare professionals are associated with better prescribing choices and lower costs. Dr. Lisa Bero of the University of Colorado Anschutz noted that increased contact with drug company promotion tends to make prescribing “less appropriate, more frequent, and more expensive.”