As for the dog in this thread that died. The owner has not posted and we know nothing about what really happened.
It died from something...could be anything. I am not going to sit here and try to speculate if the vet gave and NSAID and if that killed the dog instantly which to me sounds bizarre.
I am thinking this was a very sick pupster .. and could have been anything .. perhaps a cardiac arrest? Who knows. Not one med I am quite sure unless it was some massive overdose...which again..highly unlikely. I consider this discussion a bit of a waste of time and I quite frankly don't have time to waste. I hope the OP finds a way to help console his/her friend .. very sad that the pupster passed.