I presented the paper “Big pharma, bad science? An analysis of retractions in bio-medical journals” at the 79th Annual Meeting of the Academy of Management in Boston, Massachusetts, USA. In this paper, I study the amount of and the reasons for retractions of bio-medical articles authored by firm researchers or sponsored by firms. The empirical analysis based on retractions in the bio-medical literature reveals that retractions of firm articles are quite rare. However, among the retracted firm publications fake data and questionable research are important reasons for retraction.