HYDROSTOMY • HYDRATION TOOLS

Your hydration mix, made clearer.

Explore ingredient ratios from published hydration recipes. Select a formula, choose your batch size and measuring spoon, then view the calculated amounts.

Hydration recipe calculator

Choose a reference recipe. These are different formulas with different purposes, not interchangeable treatments.

Batch size

Your measuring spoon

1 liter batch

St Mark’s · exact weights

Important safety information

Ingredient calculations are informational. Never round tiny salt quantities to the nearest spoonful. For clinical recipes, a precise gram scale and advice from your treating clinician are strongly recommended.

How to use this tool

Choose the reference formula your clinician recommended, or explore the basic household recipe.
Select the volume of the finished drink.
Choose your spoon size to see applicable reference measures and precision warnings.
Dissolve ingredients completely in safe drinking water; prepare fresh and discard after 24 hours.

Clinical information & sources

St Mark’s is used in selected high-output stoma / intestinal failure situations, with specific sodium requirements. Small-volume spoon conversions are not reliable.

NHS St Mark’s clinical recipe ↗

UNICEF household sugar–salt recipe ↗

For children or serious dehydration, use commercially prepared ORS according to medical advice. Seek urgent care for fainting, confusion, inability to keep fluids down or markedly reduced urine.