Uehiro Blog Post on Performance enhancers and smart drugs in e-sports

Toni Gibea wrote on Uehiro Blog administrated by Uehiro Centre for Practical Ethics, University of Oxford, a short post on how doping became a primary concern for e-sports and sum up a few main arguments that could be raised against the idea that the use of Adderall is an obviously impermissible moral practice.

You can read the entire post by accessing the following link: http://blog.practicalethics.ox.ac.uk/2015/09/guest-post-performance-enhancers-and-smart-drugs-in-e-sports/

What do you think? Are the so called smart-drugs morally impermissible and what reasons do we have against them?