Initially, I thought the girl just fainted in the second scene. Turns out if you read the text, she smells a poisonous flower and that causes her to faint. Put that under drugging, or gas, or sleeping powder.
Contributed by anonymous.
Spanish. In this scene, a man slaps a girl unconscious. She wakes up bound and gagged. They then give her an injection which looks like it paralyzes her or something.
Contributed by c3c (digdid).
Two scenes here.
In the first part, a woman is knocked out from hypnotic suggestion.
In the second part, another woman is given a big electrical jolt, knocking her out.