There's a treatment for convulsions. IV benzodiazepines.
Guess what they use to relax executees?
High dose benzodiazepines.
I seriously doubt this guy "suffered" in any way.
He would have been out like a light.
I wouldn’t have cared if he did..really....though I prefer hanging for criminals...done deal.....or even sooting wouldn’t bother me....but this business of making them comfortable....nah!