Superman, The Downward Spiral Chapter 64 (1)
It was a bit more than an hour later, Superman came to. He ached all through himself, the effects of the Kryptonite laced air he had been unwittingly breathing, and Cat’s injection that had knocked him out (along with the horrible heel of her spite)… severely compromising his invulnerability to pain and harm, and inhibiting the use of his impossible strength, otherworldly powers. He checked his watch, knowing he had to get going.