There is though maybe not legally, for example the wide range of amphetamines. There has been a lot of research into this for fighter pilots[1]. [1] https://en

There is though maybe not legally, for example the wide range of amphetamines. There has been a lot of research into this for fighter pilots[1]. [1] https://en.wikipedia.org/wiki/No-go_pill https://en.wikipedia.org/wiki/No-go_pill