Correction to: BMC Pharmacol Toxicol 19, 63 (2018).

https://doi.org/10.1186/s40360-018-0252-z

The original publication of this article did not provide clear clarification that the switch from brand to a generic drug was not done by the authors for the intention of the study. Patients were informed of the options and on switching to generic drugs the patients were able to expressed their agreements or disagreements, those who expressed their disagreement continued with their regimen.