Right, ok. Looking I see that Enervit does list 25g of carbs per serving. The fact it’s labelled as an isotonic drink meant I though it was largely just electrolytes. Most electrolyte drinks have some carbs in them though, but I’d personally not seen them as my “carb source”. Maybe that’s my own failure in thinking though.
However, Enervit is not really that much different to PH. One sachet of PH has 15g of carbs in it looking at a pack I have nearby me. So a reduction, but it’s not zero like Jeff suggested.