I have troubles with low potassium and magnesium in heavy sweat environments. I need both to be stable so that medications that I take work correctly. There is a product, in the USA, called Lite Salt that is a mixture of potassium chloride and sodium chloride. I use this only when I am bad shape as these mixtures are tough on the kidneys. I think it is best to get replenishment via normal dietary means.
Electrolyte loss is a killer and in some cases it creeps up on without warning. A few years ago, I walked from the parking lot to Delicate Arch in Arches, National Park, Utah. This is high desert at 4600+ feet and temps were around 100oF. I superhydrated before leaving the car AC by downing 2 liters of water. We walked the 1.5 miles to Delicate Arch, had a great time, spent about an hour at the Arch enjoying the view and taking photos. The walk to the Arch is all uphill. I had one liter of water with me. I drank 500ml at the Arch and 500ml half way back. I made it back to the car and was overwhelmed with early signs of heat stroke. The worst was loss of vision and partial delirium. I downed 2 liters of water in the car but it wasn't until I ate a banana (hard to do because you want to throw up) and drank 1 liter of Gatorade that I became stable. I have had subsequent problems with almost all occurring in desert environments in the American SW or SW Asia, but I now know to not let it get to this point.
Incidentally, Moab, Utah is wonderful for hikes. Two large national parks, decent folks, good hotels. We stay at the Hampton Inn, in Moab if you ever trek over.

Electrolyte Rehydration SolutionHome made Rehydration solution recipe.
1 litre of water
1/2 measured teaspoon of white salt. Use a kitchen measuring spoon not a normal teaspoon.
8 teaspoons of sugar. Ditto
Mix until disolved.
Can be flavoured with fresh squeezed lemon or lime juice for added vit c, or other flavourings like squash or other fruit juices.
Just drinking water can flush out salts and nutrients that our bodies need, so beware of just drinking gallons of water without replacing the salts and sugars too.
The special spoons are available( on line of course)for a few pounds, always handy in a first aid kit along with a couple of salt and sugar satchets in case of need when out and about.
Oh only 23! I would love that! I had 36 in the shade, and couldnt water the garden untill it got to 29 in the shade!, which felt so much cooler. It was over 44 in the sun in my garden.Today is miserable for me. It's far too hot and muggy. I do fine in the cold, but the heat just totally de-energises me.
It's after 7pm and it's just below 23˚C in my garden just now. I know we still have four more hours of useable daylight, but there's no encouragement to go out and be busy in it.
It'll pass, soon enough we'll have rain and be complaining about that too![]()

If I buy electrolyte soluble powder or tablets I always look for some Mg content. Cramp is a problem for me.Electrolyte Rehydration Solution
1 litre of water (2 for children).
6 teaspoons of sugar.
0.5 teaspoon of salt.
0.5 teaspoon of salt substitute (aka potassium chloride).
1 small pinch of baking soda.
