The most effective things to take after drinking alcohol are water, electrolytes, and a simple pain reliever if you need one. There’s no single pill that prevents a hangover, but a few targeted choices can reduce how rough you feel the next morning and help your body recover faster.
Water and Electrolytes Come First
Alcohol is a diuretic, meaning it causes your kidneys to flush out more fluid than you’re taking in. This is the primary driver behind hangover headaches, fatigue, and that dry, wrung-out feeling the next day. Drinking water before bed and again when you wake up is the simplest and most effective thing you can do. There’s no magic amount, but alternating a glass of water between alcoholic drinks and finishing the night with 16 to 24 ounces puts you in a much better position.
Plain water works, but adding electrolytes helps more. Alcohol depletes sodium and potassium through increased urination, and replacing those speeds rehydration. Sports drinks, coconut water, or electrolyte packets dissolved in water all do the job. Sugary versions have a slight edge here because alcohol can dip your blood sugar overnight, and a small amount of glucose helps correct that.
Which Pain Reliever Is Safest
If you wake up with a headache, your two realistic options are ibuprofen or acetaminophen. Both work, but they carry different risks when alcohol is in the picture.
Aspirin is the worst choice. Endoscopic studies have shown that aspirin causes considerably greater damage to the stomach and duodenal lining than ibuprofen or placebo. Alcohol on its own already irritates the stomach, and aspirin amplifies that. Ibuprofen is gentler on the gut by comparison, though alcohol does slightly increase the stomach irritation it causes. If your stomach is already churning, take it with food.
Acetaminophen gets a bad reputation in this context because of its link to liver damage. Your liver processes both alcohol and acetaminophen, so the concern is that combining them overloads the organ. In practice, Cleveland Clinic notes that taking a normal dose of acetaminophen the day after drinking shouldn’t cause liver damage for most people. The real danger is chronic heavy drinking combined with regular acetaminophen use, or taking more than the recommended dose. If you had a few drinks at a party and take a couple of standard doses the next morning, you should be fine. If you drink heavily and frequently, ibuprofen is the safer bet.
B Vitamins Your Body Actually Loses
Alcohol depletes several B vitamins, and replacing them supports your recovery. The two most relevant are thiamine (B1) and pyridoxine (B6).
Thiamine is the one doctors worry about most. Alcohol interferes with its absorption, and in people who drink frequently, deficiency can lead to serious neurological problems. For occasional drinkers, a standard B-complex vitamin the morning after is sufficient. For regular drinkers, the clinical recommendation is 250 to 500 mg of thiamine daily for several days, with ongoing supplementation of 100 to 250 mg as long as drinking continues.
Vitamin B6 deficiency is uncommon in the general population but shows up frequently in people who drink regularly, usually alongside other B vitamin deficiencies. Alcohol also reduces the bioavailability of riboflavin (B2) by impairing its absorption in the small intestine. A B-complex supplement covers all three and is the most practical approach. You don’t need to buy them individually.
Food That Helps (and Why)
Eating before or shortly after drinking slows alcohol absorption and gives your body fuel to work with during recovery. The next morning, your priority is replacing what you’ve lost: carbohydrates for blood sugar, sodium for electrolyte balance, and protein for sustained energy. Eggs are a popular hangover food for a reason. They contain cysteine, an amino acid your body uses to produce glutathione, which helps break down the toxic byproducts of alcohol metabolism. Toast, bananas, and broth-based soups also check the right boxes.
Avoid greasy, heavy meals if your stomach is already irritated. They won’t “soak up” alcohol that’s already been absorbed. Light, easy-to-digest foods are kinder to an inflamed stomach lining.
Supplements That Don’t Live Up to the Hype
N-acetylcysteine, commonly called NAC, is one of the most popular hangover supplements sold online. The theory is that it boosts glutathione production, helping your liver clear acetaldehyde, the toxic compound your body produces while breaking down alcohol. In practice, the evidence is disappointing. A clinical study gave participants 1.2 grams of NAC before drinking and another 1.2 grams after. The result: NAC had no impact on either lab markers or hangover symptoms the following morning. One earlier study found a modest reduction in nausea among women at very low blood alcohol levels, but that’s a far cry from what supplement companies promise.
Dihydromyricetin (DHM), extracted from the Japanese raisin tree, is another popular option in hangover supplements. It’s still in early-stage human research. A Phase 1 dose-escalation trial is testing its safety and dosing in healthy volunteers, but no results on hangover symptoms have been published. Animal studies have been promising, but that hasn’t translated into reliable human evidence yet.
A Practical After-Drinking Routine
If you want a simple plan, here’s what actually has evidence behind it:
- Before bed: 16 to 24 ounces of water, ideally with electrolytes. A B-complex vitamin if you have one on hand.
- When you wake up: More water or an electrolyte drink. A light meal with carbs and protein, like eggs and toast.
- For headache: Ibuprofen with food is the safest all-around option. Acetaminophen at normal doses is fine for occasional drinkers. Skip the aspirin.
- Throughout the day: Continue hydrating. Avoid caffeine in large amounts, as it’s another diuretic and can worsen dehydration.
There’s no shortcut that erases the effects of alcohol completely. Your liver needs roughly one hour to process each standard drink, and no supplement speeds that up. But replacing what alcohol takes from your body, water, electrolytes, and B vitamins, and choosing a stomach-safe pain reliever makes a real difference in how quickly you bounce back.