Dehydration is a real danger in heat, hard exertion, and especially during illness with vomiting or diarrhoea — where it can become serious quickly, particularly in children and older people. Plain water doesn't replace the lost salts your body needs to actually hold onto that water. Rehydration salts restore the electrolyte balance, so you recover far faster and feel human again sooner.
They're light, keep for ages, and address a genuine medical need that water alone can't. A few sachets in a first-aid or travel kit is cheap insurance against the flattening effects of a stomach bug or a scorching day's exertion.
Use them when you've lost a lot of fluid and salts — after heavy sweating on a hot or strenuous day, or during a bout of sickness or diarrhoea. Dissolve in clean water and sip steadily. For serious or prolonged illness, especially in the very young or old, seek medical advice as well.
Look for sodium, potassium and glucose in sensible proportions — that's what rehydrates effectively, not just flavoured water.
Pre-measured sachets or tablets are easy to carry, keep well, and take the guesswork out of mixing the right dose.
Dry salts store for a long time, so they're ready in a kit for years — check and rotate at the expiry date.
Water alone doesn't replace lost salts and can even dilute them further. Rehydration salts restore the balance your body needs to recover.
More is not better — an over-concentrated mix can worsen things. Follow the dosing on the sachet with the stated volume of clean water.
Balanced electrolyte hydration tablets that replace the salts lost to sweat, heat and illness, helping you rehydrate faster than water alone.
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