So I'm doing 1/8 tsp potassium and 1/8 tsp sodium for now, in 1 cup of water.
Potassium chloride, or potassium citrate or some other kind? Sodium chloride (NaCl = table salt), or sodium bicarbonate, or something else?
I'm always curious about what ingredients other folks are using.
Just to use one example, the WHO oral rehydration salts recipe calls for the following to be mixed into a liter of water:
Sodium chloride 2.6 grams
Glucose (aka, dextrose) 13.5 grams
Potassium chloride 1.5 grams
Trisodium citrate 2.9 grams
People with NMH/POTS probably don't need any glucose since we're not losing fluids due to vomiting or diarrhoea. I sometimes don't add glucose. But when I'm feeling too exhausted to eat anything, and only drinking this mix, then I include some glucose (1/2 to 1 tablespoon, somewhere between 5-10 grams) to help with absorption.
I have read in several places that some kind of sugar (glucose, sucrose, etc.) is helpful for absorption. But I confess I don't have the biology background to evaluate statements like this:
Sodium won’t get to where it needs to go without glucose and sucrose.
Here’s a scientific explanation:
– Sodium is absorbed into the cell by several mechanisms, but chief among them is by co-transport with glucose, sucrose and amino acids – this means that efficient sodium absorption is dependent on absorption of these organic solutes.
– Absorbed sodium is rapidly exported from the cell via sodium pumps – when a lot of sodium is entering the cell, a lot of sodium is pumped out of the cell, which establishes a high osmolality in the small intercellular spaces between adjacent enterocytes.
– Water diffuses in response to the osmotic gradient established by sodium – in this case into the intercellular space. It seems that the bulk of the water absorption is transcellular, but some also diffuses through the tight junctions.
– Water, as well as sodium, then diffuses into capillary blood within the villus
Without glucose and sucrose, the constant “flow” of sodium and water into the body becomes rate-limited (i.e. slows down as the body tries to find glucose to work with the sodium for the co-transport effect described above).
I hope this post is not too complicated/confusing because I know brain fog is a problem for most of us.