Below are the main rubriks (i.e strongest indications or symptoms) of Allium Cepa in traditional homeopathic usage, not approved by the FDA.
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Bad odor from the mouth or throat.
Gums and teeth
Toothache with coryza, getting better when the catarrh is worse, and worse when the catarrh ceases.
Dryness of mouth, root of tongue, soft palate and throat.≡ more ...