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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Frequent hawking up of thick mucus, which is always produced anew.
At night, mucus in the throat, awaking him in the morning by tickling, and easily expectorated; this recurs again, then rawness on the chest, which only disappeared after rising.
Easy hawking up of mucus in the morning.
Cough, mostly in the morning, with sometimes salty, sometimes fetid, purulent expectoration.
Cough, with expectoration of greenish, purulent mucus, and sensation of roughness on the chest (25th d.).
Bloody expectoration, with the cough, in the evening (7th d.).≡ more ...