Most cases of dehydration can be treated at home with the right fluids, the right pace, and a little patience. The key is replacing not just water but also the salts and sugars your body lost, because plain water alone doesn’t absorb efficiently when you’re dehydrated. Here’s how to do it effectively, and how to tell when home treatment isn’t enough.
Why Water Alone Isn’t Enough
Your small intestine absorbs water through a mechanism that depends on both sodium and glucose being present at the same time. Sodium and glucose are pulled into intestinal cells together, and water follows them. This is why drinking plain water when you’re significantly dehydrated feels like it just sits in your stomach. Adding a small amount of salt and sugar to water dramatically speeds up how fast your body can actually use it.
The Homemade Rehydration Drink
You can make an effective oral rehydration solution with three ingredients from your kitchen:
- 4 cups of water
- ½ teaspoon of table salt
- 2 tablespoons of sugar
Stir until everything dissolves completely. The ratio matters: too much sugar can worsen diarrhea, and too much salt tastes terrible and can be harmful. Measure carefully rather than eyeballing it. If the taste is hard to get down, you can add a small amount of sugar-free flavoring.
This recipe mirrors the balance used in commercial oral rehydration solutions and works for adults and older children. Sip it steadily rather than gulping large amounts at once, which can trigger nausea, especially if vomiting caused the dehydration in the first place.
Store-Bought Options Compared
If you’d rather grab something off the shelf, not all electrolyte drinks are created equal. Products designed for rehydration (like Pedialyte) contain two to three times the sodium and significantly more potassium than standard sports drinks like Gatorade. In a 12-ounce serving, Pedialyte Classic provides about 16% of the daily value for sodium and 6% for potassium, while Gatorade Thirst Quencher provides only 7% and 1%, respectively.
Sports drinks are designed for people sweating during exercise, not for someone recovering from illness. They contain more sugar and less sodium than your body needs during actual dehydration. If Pedialyte or a similar oral rehydration product is available, choose it over a sports drink. If all you have is Gatorade, it’s better than plain water, but it’s not ideal.
How to Pace Your Fluids
The biggest mistake people make is drinking too much too fast. If you’re nauseous or have been vomiting, start with small sips every few minutes. A teaspoon or tablespoon at a time is fine. Once you can keep that down for 15 to 20 minutes, gradually increase the amount.
For adults, aim to drink steadily over several hours rather than forcing down a large volume at once. If you’re losing fluids through diarrhea, try to match what’s coming out. A good general target is to drink until your urine returns to a pale yellow color, which signals that your body’s fluid levels are recovering.
Rehydrating Children
Children dehydrate faster than adults, and the approach needs to be more precise. For mild dehydration, the general guideline is roughly 50 milliliters of fluid per kilogram of body weight over four hours. For a 22-pound (10 kg) toddler, that works out to about 500 mL, or just over two cups, sipped gradually over four hours. For each episode of diarrhea, offer an additional small amount, up to about one cup.
Breastfed babies should continue nursing. Formula-fed infants should continue receiving full-strength formula. There’s no need to dilute formula or switch to a special diet. For older children, use an oral rehydration solution like Pedialyte rather than juice or soda, which can make diarrhea worse due to their high sugar content.
Eating During Dehydration
You may have heard of the BRAT diet (bananas, rice, applesauce, toast) as the go-to for dehydration and diarrhea. Current recommendations from the American Academy of Pediatrics, the CDC, and the World Health Organization have moved away from this approach. The old idea of “gut rest,” where you restrict food and slowly reintroduce bland items, turns out to be counterproductive. Clinical trials show that eating a normal, age-appropriate diet as soon as rehydration is underway leads to shorter illness, less stool output, and better nutritional outcomes compared to gradually reintroducing food.
That doesn’t mean you need to force a full meal. Eat what appeals to you and what you can keep down. But there’s no benefit to limiting yourself to crackers and broth if you feel up to eating something more substantial. Soups, scrambled eggs, oatmeal, and fruits with high water content like watermelon or oranges are all reasonable choices.
Recognizing How Dehydrated You Are
Mild dehydration shows up as thirst, slightly darker urine, a dry mouth, and maybe a mild headache. This is the stage where home treatment works well and quickly.
As dehydration progresses, symptoms get more noticeable: dizziness or lightheadedness when standing, fatigue, muscle cramps, a fast heart rate, flushed skin, and urine that’s dark amber or brownish. You might feel chilled or overheated. Some people notice sugar cravings or a loss of appetite. Constipation is another common sign that’s easy to overlook. A simple skin test can help: pinch the skin on the back of your hand, and if it doesn’t flatten back immediately, you’re likely moderately dehydrated.
Severe dehydration is a different situation entirely. Signs include confusion, slurred speech, a rapid pulse, skin that feels hot and dry, fainting, a fever above 103°F, or seizures. In children, watch for no tears when crying, no wet diapers for three hours or more, sunken eyes, a sunken soft spot on an infant’s head, or skin that stays “tented” after being pinched. These symptoms require professional medical care, not home treatment.
When Home Treatment Won’t Work
Home rehydration is effective for mild to moderate dehydration, but some situations call for medical help. If you can’t keep any fluids down after repeated small sips over several hours, oral rehydration simply can’t do its job. Persistent vomiting that lasts more than 24 hours in an adult, or more than a few hours in a young child, is a signal to get help.
Other red flags: no urination for eight hours or more, confusion or unusual drowsiness, bloody diarrhea, or dehydration in someone with a chronic condition like diabetes or kidney disease where fluid balance is already complicated. Infants and elderly adults reach dangerous levels of dehydration faster than healthy adults, so the threshold for getting professional care should be lower for both groups.
Preventing a Repeat Episode
Once you’re feeling better, your body is still catching up on fluid reserves. Continue drinking more than usual for at least a day or two after symptoms resolve. If heat or exercise caused the dehydration, plan to pre-hydrate before your next exposure. Drinking 16 to 20 ounces of water in the two hours before vigorous activity gives your body a head start.
Alcohol and caffeine both increase urine output, so if you’re recovering from dehydration, hold off on coffee and alcohol until you’re fully rehydrated. For illness-related dehydration, keep oral rehydration supplies (or the ingredients for the homemade version) on hand so you can start treatment at the first sign of fluid loss rather than waiting until symptoms worsen.