One drug he talks about is an antidepressant called reboxetine (branded as Edronax by its makers, Pfizer) that he used to prescribe to his patients.
http://www.economist.com/news/science-and-technology/21659703-failure-publish-results-all-clinical-trials-skewing-medical/

branded as Edronax by its makers, Pfizer
なぜ、makers と複数形？

ランダムハウス英和に、「時にmakers 」との注釈がある（用例はなし）ので、
まあそういうことなのかな。（どういうこと？）