Dosages don't always have a linear response, effects at standard doses aren't simply intensified by larger doses: https://en.wikipedia.org/wiki/Paradoxical_reac

Dosages don't always have a linear response, effects at standard doses aren't simply intensified by larger doses: https://en.wikipedia.org/wiki/Paradoxical_reaction https://en.wikipedia.org/wiki/Paradoxical_reaction And with ketamine as with other 'fun' sedatives such as ambien or quaaludes back in the day, one has to resist the urge to nod off for long enough for the fun to start.