You can’t duplicate Pedialyte’s exact formula at home, but you can rebuild its basic structure: water, electrolytes (mainly sodium and potassium), and a bit of sugar. The key is precision—too little salt won’t help, too much can worsen dehydration. Trusted recipes often call for 1 liter of water mixed with half a teaspoon of salt and six teaspoons of sugar, sometimes adding a dash of baking soda for balance. Every adjustment shifts the drink’s osmolality, so stick to versions vetted by medical sources. GoodRx highlights studies on commercial oral rehydration solutions, including one in Nutrients that measured how brand, storage, and temperature affect osmolality. They also link to a Takeda Pharmaceuticals recipe booklet for short-bowel syndrome patients. If you choose to whip up your own mix, don’t wing it. Follow a healthcare-approved guide, keep sterile tools on hand, and label your batch with date and contents.