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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Flat ulcers and blisters inside of mouth, burning and painful when touched.
Dry mouth and throat, inclination to drink.
Nightly pressing toothache, with swelling of lower lips and of gums.
Gums and teeth
Digging, boring toothache, especially during or after eating sweetmeats or fruit.
Great sensitiveness of the lower teeth.
Toothache lessened by smoking.
Saliva generally increased.
Dry tongue and dislike to talk.
Stuttering on account of heaviness of the tongue.
Burning about tip of tongue, as if it were cracked.
Bitter or metallic taste in mouth.
Slight redness of mucous membrane of mouth and fauces, with rawness and scraping; desire to hawk and Hem; mucus collects at night, and is hawked up in morning.≡ more ...