Hangovers: what actually helps and when it is dangerous

Several hits at once. Alcohol is a diuretic, so you lose fluid and electrolytes and wake dehydrated. Your liver converts alcohol into acetaldehyde, a toxic byproduct that drives nausea and sweating until it clears. Alcohol fragments sleep, so even a long night in bed is not restful. It irritates the stomach lining, triggers body-wide inflammation, and throws off blood sugar. Darker drinks carry more congeners, chemical byproducts of fermentation, and tend to produce worse hangovers than clear ones at the same amount of alcohol.

Time is the cure; the rest is comfort. Water or an electrolyte drink replaces what you lost, and a bland breakfast like toast or crackers settles the stomach and steadies blood sugar. Sleep is real treatment, since alcohol wrecked last night's. Ibuprofen can take the edge off a headache but irritates an already-irritated stomach, so take it with food. Skip acetaminophen while alcohol is still in your system, because the combination is hard on the liver. Coffee makes you a more alert hangover, not a smaller one. Hair of the dog only postpones the crash.

Most hangovers peak when blood alcohol returns to zero and fade within about 24 hours. If you are still feeling wiped out past that, poor sleep and dehydration are usually the lingering parts, and another night of real rest finishes the job. Feeling ill for days after drinking, or hangovers that keep getting worse over time at the same intake, are worth a conversation with a clinician rather than a stronger remedy.

The only certain prevention is drinking less or not at all - every other measure just shrinks the bill. What genuinely helps: eat before and while you drink, pace yourself to about one standard drink an hour, alternate each alcoholic drink with a glass of water, and favor lighter-colored drinks, which carry fewer congeners. Decide your limit before the first drink, not after the third. A big glass of water before bed takes the edge off the morning.

A hangover is miserable but you can wake the person and talk to them. Alcohol poisoning is a medical emergency, and the signs are: someone who cannot be woken, slow or irregular breathing, vomiting while passed out, seizures, and skin that is pale, bluish, cold, or clammy. Call 911. Never leave someone in that state to sleep it off alone and never put them in a cold shower. Roll them onto their side so vomit cannot choke them, stay with them, and give the 911 operator what you know about what and how much they drank.

A single bad hangover is a lesson, not a diagnosis. The patterns worth taking seriously are hangovers arriving more often or hitting harder than they used to, drinking to steady your nerves or get through the day, finding you cannot cut back when you try, or people close to you raising it. Alcohol use disorder is common and treatable, and a clinician can talk it through without judgment and with real options, including medication. Texting an AI doctor is a low-key way to ask the awkward first questions before you decide whether to have that conversation in person.