Zopiclone treats insomnia in millions globally — but must only be used 2–4 weeks maximum. This 2026 complete guide covers GABA-A mechanism, why the bitter taste happens and how to manage it, zopiclone vs zolpidem comparison table, 7.5mg adult vs 3.75mg elderly dosing, alcohol absolute prohibition (deaths documented), complex sleep driving warning, dependence taper protocol, and why CBT-I outperforms it long-term.