The Pocari powdered sachets can be purchased at most supermarkets, but its availability is very hit and miss.

We have previously purchased it at Geant and Carrefour, and this week we emptied the shelf at Carrefour in Ajman.

When/if you see it grab it, as it sometimes disappears for weeks on end.

I think 1 sachet makes about 1 1/2 litres.