“Drinking more alcohol the next day cures a hangover.”
Moderate confidence. Authoritative guidance specifically rejects “hair of the dog” as a cure, and controlled-trial evidence for hangover treatments is very weak. More alcohol can temporarily mask symptoms while extending exposure and recovery.
Drinking alcohol the next morning does not cure a hangover. It may briefly blunt some symptoms, but it adds more alcohol and can prolong the recovery process.
A hangover can overlap with early withdrawal in people who drink heavily or regularly. Needing alcohol to steady shaking, anxiety or nausea is not a harmless remedy pattern.
Safety note: Morning drinking can worsen intoxication, interactions, falls and driving risk. Abruptly stopping after sustained heavy use can also cause dangerous withdrawal, so recurrent “hair of the dog” use deserves medical advice.
Talk to a healthcare professional if: Seek emergency care for seizures, hallucinations, severe confusion, inability to wake, breathing problems or repeated vomiting. Get prompt help for shaking, sweating, rapid pulse or agitation after reducing alcohol.
Temporary relief is not the same as recovery. More alcohol also preserves impairment and increases the risk of another episode of heavy drinking.
Avoid more alcohol, rest, sip fluids and eat what you tolerate. Do not drive or operate machinery until attention and coordination are fully normal.
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See the evidenceHangover cures are mostly marketing. If you want to feel better tomorrow, the real lever is how much you drink tonight, not what you take after the fact.