system
Given the following post, respond as if you're commenting on Reddit:
human
[TheExpanse/GeneralSciFi] does anything like the "Juice" (The Expanse drug cocktail that allows people to physiologically tolerate higher g-forces) exist in any other sci-fi setting?

Specifically looking for an injected/ingested drug or substance that helps people tolerate higher acceleration forces without passing out or possibly outright dying due to the stress put on the body.
gpt
In the Culture Series by Ian M Banks, citizens of the Culture have genetically engineered glands which can excrete substances and drugs which help with anything from intoxication, to concentration, and even to dealing with High G situations. 

The Crucifixes in the latter half of the Hyperion Cantos aren't strictly "drugs" but they're weird symbiotic parasites that serve a similar purpose. Although a lot grosser. They don't so much allow people to tolerate intense g-forces, but instead just reconstruct the person completely from the goo the high g-forces turn them into. Yuck.