Treatment for Headcases?

It has recently been demonstrated that a cheap and easily-available drug, transexamic acid, used to treat knife and gunshot wounding, benefits people with mild to moderate brain injuries (https://www.theguardian.com/science/2019/oct/14/common-drug-could-prevent-thousands-of-head-injury-deaths). The drug does not help patients with severe brain injuries and has to be given as quickly as possible after the traumatic event. It works by slowing the breakdown of blood clots. Perhaps there is a role for this treatment in some contact sports (by the ring or the pitch side) where brain injuries are likely?