Changing prescription, dispensing and consumption habits is extremely difficult and it probably cannot be achieved by a bulletin alone. By simply paying attention to events such as these experienced by some bulletins, you can guess that your own bulletin has some impact:
• the complaints of companies about the “disastrous impact of the article on the launch” of their last new product;
• the complaints of the regulatory agency who felt “obliged to take a decision” because you raised the point in a particular article;
• the number of journalists asking for advice on a drug’s efficacy or side effects;
• the increase in the number of paying subscribers, or of those who ask for permanent subscription renewal, etc.