Does a normal kaioken eats up a stamina?

[Let's Go Fearless!]

What do you think?

 

[Fantastische Hure]

ye

 

[Papasmurf]

Why wouldn't it? You're forcibly multiplying your base power beyond its normal limits either way.

 

[Flame]

Yes. King Kai said that even normal Kaioken could kill Goku.

 

[sei'taer]

All forms of kaio-ken cause stress on the body, that's why kaio tells goku never to go above doubling it, because that's the most his body can handle.