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You stop drinking to feel better. But many people feel worse first. If you’re tired after quitting drinking, you are not alone. Post‑alcohol exhaustion can show up after a binge, after weeks of heavy use, or after you quit and your body starts to heal.

Many people call this “alcohol fatigue syndrome.” It is not a formal medical diagnosis. It is a real pattern: low energy, heavy limbs, brain fog, poor sleep, and a sense that your body is moving through mud. In most cases, energy returns as sleep, nutrition, mood, and brain chemistry steady out.

This guide explains what causes fatigue, how long it can last, what helps most, and when it is time to get medical support.