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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RECTUM, ANUS, STOOL
Very offensive flatus.
Diarrhoea after midnight, or toward morning.
Constipation, following intermittents treated by quinine.
Rhagades at the anus.≡ more ...