Do electrolytes actually help a hangover?

Partly. A hangover is several problems stacked on top of each other, and electrolytes only address one of them: the dehydration alcohol causes. They will not remove the alcohol, undo the bad sleep, or reverse the inflammation. What they do is help you rehydrate faster than plain water by replacing the sodium, potassium and magnesium you lose overnight. Useful, but not a reset button.

Why does drinking dehydrate you in the first place?

Alcohol suppresses vasopressin, the hormone that tells your kidneys to hold on to water. With less of it, you produce more urine than usual. The rough figure is about 10 ml of extra urine for every gram of alcohol you drink. A standard drink contains roughly 14 g of alcohol, so four drinks can flush out an extra 500 ml or more on top of normal losses.

That fluid does not leave alone. Sodium and potassium go with it. By morning you are down on both water and the minerals that let your body actually use water. Drinking a litre of plain water on top of that dilutes what little sodium you have left, which is why water alone often does not fix the foggy, flat feeling.

What do electrolytes actually do the morning after?

Sodium is the main one. It is the mineral your body uses to hold water in the right places, so replacing it helps the water you drink stay in your system instead of passing straight through. Potassium works alongside it to keep fluid balanced across your cells. Magnesium is the one most people are quietly low on anyway, and alcohol increases how much you excrete.

So the morning after, electrolytes do one specific job: they make rehydration work. You drink water, the sodium gives it somewhere to go, and you stop feeling like a dried sponge faster than you would with water by itself.

How much do you actually lose?

There is no exact hangover number, because it depends on how much you drank, how much you sweated, and what you ate. But the direction is clear. A night of drinking can easily cost you a gram or more of sodium through extra urine, on the same order as losing 0.5 to 1.5 g of sodium per litre of sweat during exercise.

For reference, here is what a single 3.5 g serving of unflavoured electrolytes puts back:

• Sodium: 1000 mg, the workhorse for holding water in.

• Potassium: 200 mg, balancing fluid across your cells.

• Magnesium: 60 mg, the one alcohol quietly drains.

That is full clinical dosing, not a pinch of salt for flavour. Most of the gap from a night out fits inside one or two servings.

What will electrolytes not fix?

Plenty. Electrolytes do nothing about the acetaldehyde your body makes while processing alcohol, which drives a lot of the nausea. They do not replace the four hours of sleep you lost. They do not touch the inflammation or the headache directly. If you drank a bottle of wine, no powder is going to make that a clean morning.

Anyone selling electrolytes as a hangover cure is overstating it. The honest version is narrower: alcohol dehydrates you, electrolytes help you rehydrate, and rehydrating is one part of feeling human again. The rest is time, food, and not doing it again on a Tuesday.

Before bed or in the morning?

Both work, for different reasons. Taking electrolytes with water before bed gives your body the sodium to hold the fluid through the night, so you wake up less depleted. Taking them in the morning addresses the deficit directly once you are already behind. If you only do one, before bed tends to be the higher-leverage move, because you are getting ahead of the losses instead of chasing them.

One teaspoon, 3.5 g, in a glass of water. No sugar needed, no flavour needed. You are not trying to enjoy it. You are trying to put back what left.

Does the sugar in most hangover drinks matter?

Most sports and recovery drinks include sugar or dextrose, partly for taste and partly to aid absorption during hard exercise. The morning after a night out, you are not running a marathon, and you probably had enough sugar already. An unflavoured electrolyte mix has zero sugar, zero sweeteners and zero calories, so you get the minerals without the rest. That is a fact about the formula, not a health claim.

Common versions of this question

• Do electrolytes cure a hangover? No. They help with the dehydration part only. The alcohol, the sleep, and the inflammation are on their own schedule.

• Is water enough, or do I need electrolytes? Water alone can dilute your remaining sodium. Adding electrolytes helps the water actually stay in your system.

• Should I take electrolytes before bed after drinking? Yes, with a glass of water. Getting ahead of the fluid loss beats chasing it in the morning.

• Do I need a sugary recovery drink? Not for this. The morning after, you want sodium, potassium and magnesium, not 20 g of dextrose.

The boring conclusion

Electrolytes help a hangover the way they help any dehydration: they let the water you drink do its job. They are not a cure, and anyone who says otherwise is selling you the flavour. If you want the minerals that matter, full dose, with nothing else along for the ride, that is the entire point of Boring Electrolytes. Three ingredients, full clinical doses, zero sugar, at about EUR 0.40 per serving.

Unflavoured. On purpose. boringelectrolytes.com