Juice

In The Expanse series, 'Juice' emerges in Leviathan Wakes as a vital protomolecule-era drug cocktail, a clear liquid auto-injected via crash couch membranes to induce hyper-alertness under crippling g-forces, enabling Belter and Earther pilots to survive maneuvers that would otherwise liquify human tissue. Its use highlights the brutal physical toll of space combat, with a savage crash leaving users wrecked but alive. Across the series, Juice remains a grim staple of high-stakes ship battles, evolving from a mere survival tool into a symbol of the fragile human limits pushed by interstellar war, though its core formula and delivery persist unchanged.