The guide

When it's a medical question

By GyroscopeUpdated November 15, 20269 sources

Some alcohol questions need a person. If you’re pregnant or trying, the CDC says there’s no known safe amount. If you take medicines, ask your pharmacist or prescriber. If you drink heavily every day, talk to a doctor before you stop. If someone can’t be woken or is breathing slowly after drinking, call 911.

The tools on this site work out averages for planning an evening. They don’t know your medicines, your liver, whether you’re pregnant, or how you’re doing right now. A clear-time calculator is like a weather forecast. It’s good for planning your evening and no use at all for deciding whether someone needs help this minute.

Is any amount of alcohol safe in pregnancy?

No amount is known to be safe. The CDC says “there is no known safe amount of alcohol use during your pregnancy or when you are trying to get pregnant,” and that all types of alcohol can be harmful, red or white wine and beer included. NIAAA says the same for women who are pregnant or might become pregnant, and the 2025-2030 US Dietary Guidelines list pregnant women among the people who should avoid alcohol completely.

None of the tools on this site take pregnancy as an input, and none of them apply.

Can I drink on my medicines?

Ask your pharmacist or prescriber, by name, for each medicine you take. The 2025-2030 US guidelines say people taking medicines or living with medical conditions that can interact with alcohol should avoid it completely. Your pharmacist can tell you whether yours is one of them.

GLP-1 drugs such as semaglutide raise a question of their own. Nobody has tested whether the same drink hits harder while you’re on one. In a 9-week trial of 48 adults with alcohol use disorder, low weekly doses of semaglutide cut drinks per drinking day and craving, compared with a placebo, but didn’t change the number of drinking days. If you’re on one, go slowly at first and tell your prescriber what you drink.

Our clear-time engine knows nothing about medicines or liver disease, so its times don’t apply to you if either is in the picture.

Is it dangerous to stop drinking suddenly?

It can be, if you drink heavily every day. If that’s you, talk to a doctor before you stop, because withdrawal can become dangerous.

MedlinePlus says withdrawal symptoms usually start within 8 hours of the last drink, though they can start days later, and tend to peak by 24 to 72 hours. Common ones are anxiety, shakiness, irritability, nightmares and trouble thinking clearly. A severe form, delirium tremens, brings sudden confusion, fever, hallucinations and seizures, and death is possible.

MedlinePlus advises contacting your provider right away, or going to the emergency room, if you think you might be in withdrawal, especially if you drank often and recently stopped. For seizures, fever, severe confusion, hallucinations or an irregular heartbeat, go to the emergency room or call 911.

If you don’t drink heavily every day, you can stop on any night.

What are the signs of an alcohol overdose?

NIAAA lists these as the critical signs:

• confusion or stupor
• trouble staying conscious, or can’t be woken
• vomiting
• seizures
• slow breathing (fewer than 8 breaths a minute) or irregular breathing (10 seconds or more between breaths)
• a slow heart rate, clammy skin, no gag reflex
• a very low body temperature, bluish skin or paleness

If you think someone has an alcohol overdose, call 911 right away, and don’t wait for them to have every symptom. NIAAA warns that a person who has passed out can die.

Their level can keep rising after they stop drinking, because alcohol still in the stomach and gut keeps entering the blood. Cold showers, hot coffee and walking don’t reverse an overdose and can make things worse, and it’s dangerous to assume someone will be fine sleeping it off.

While you wait for help, NIAAA says to stay with the person, since they can fall or choke. Keep them on the ground, sitting or partly upright, rather than in a chair. If they’re vomiting, have them lean forward. If they’re unconscious or lying down, roll them onto one side with an ear toward the ground. Tell the responders what and how much they drank, any other drugs, and any medicines or health conditions you know of.

Am I drinking too much?

NIAAA gives doctors one quick question to ask: “How many times in the past year have you had (4 for women, or 5 for men) or more drinks in a day?” An answer of one or more is a reason to talk with your doctor about it. It isn’t a diagnosis, and nobody needs a label to make a change.

NIAAA also counts heavy drinking as 8 or more drinks a week for women and 15 or more for men, or 4 or more on any day for women and 5 or more for men. Count those in US drinks, by the pour. Your week does it for you.

The 2025-2030 US guidelines say people who are recovering from alcohol use disorder, or who can’t control how much they drink, should avoid alcohol completely, and people with a family history of alcoholism should be mindful of their drinking. NIAAA’s Rethinking Drinking has free tools to check your pattern and make a change.

What about driving?

This site won’t tell you when you can drive. Don’t drive after drinking. Every tool here is for adults of legal drinking age, which is 21 in the US.

If you or someone you love can’t stop, if you can’t stop has the helplines, the three approved medicines, the kinds of treatment and the groups, and Am I drinking too much? has the three screening questions doctors use.