Below are the main rubriks (i.e strongest indications or symptoms) of Natrum Carbonicum in traditional homeopathic usage, not approved by the FDA.
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Much thirst, only when eating.
Thirst at various times, also at once in the morning, and in the evening after going to sleep.
Much thirst in the forenoon.
Violent thirst, from morning till evening.
Much thirst, every morning after rising, with heat and dryness of the mouth, for several hours.
Neither hunger, nor appetite, at noon and in the evening.
Little appetite, and yet the stomach feels empty.
Little appetite at dinner, no taste for meat, rather for bread.
Appetite and hunger, but he is soon satiated.
More hunger than usual, also in the afternoon.
Much more hunger and appetite for breakfast, than usual.
Much appetite, in the morning, noon and evening.
Hunger in the forenoon, after a hearty breakfast; he had to eat to drive away his languid feeling.
Intense hunger in the forenoon, little at noon.
Constant hunger (15th d.).
Rabid hunger, in the afternoon.
Dainty-mouthed; as soon as he sees anything eatable, he would like to taste it.
After a meal, a strong desire for smoking tobacco, which he relishes particularly well.
She relishes no food, and therefore does not eat anything.
Aversion to milk.
Aversion to meat and fatty food (2d d.).