I don't see the problem...I would never take in permently, nor do i want to be NT, but I think it would be interesting to see how a NT sees things for a couple hours, what is the big deal?
2 issues:
1 - If you take it a few times and it leaves any minor lasting effects (which is quite likely if it alters enough neural pathways to make an autistic brain act NT) then these lasting effects will be cumulative. This is why I asked if anyone can cite a medical journal so I can read up on the mechanism of action and study this more.
2 - Every person who willingly takes any drug is supporting the manufacturers/inventors of that drug further and funding further development of it. Don't kid yourself into thinking that such a drug will remain forever optional, it WILL be forced onto people, children at first (if it gets approved for usage in minors, otherwise it'll have lesser uptake but still happen), eventually it could very well be a case of "take your autism meds or we cut off all services and support and/or put you in an institution".