Drowsy driving kills 6,400 Americans annually — 17.6% of fatal US crashes involve fatigue per CDC April 2026. This complete guide covers how sleep deprivation impairs reaction time at 20 hours awake equals 0.08% BAC, what microsleep is, a full drowsy vs drunk driving comparison table, who is most at risk, and the coffee nap strategy endorsed by NHTSA.

Zopiclone and eszopiclone (Lunesta) are the same compound — eszopiclone is the purified active stereoisomer of zopiclone. This 2026 guide covers the GABA mechanism, correct dosage by strength, why the metallic taste occurs, dependence and withdrawal risks, the next-day driving warning, complex sleep behaviour FDA boxed warning, and a full 4-Z-drug comparison table.

Zopiclone and Zolpidem are both Z-drug sleep medicines with the same mechanism — but Zopiclone lasts 5 to 6 hours while Zolpidem lasts only 2 to 3 hours. This makes Zopiclone better for sleep maintenance and middle-of-night waking, while Zolpidem causes less morning grogginess. This complete comparison covers half-life, side effects, insomnia type matching, and the key safety rules both medicines share.