Below are the main rubriks (i.e strongest indications or symptoms) of Merc Viv in traditional homeopathic usage, not approved by the FDA.
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RECTUM, ANUS, STOOL
Greenish, Bloody and slimy, worse at night; with pain and tenesmus
Discharge accompanied by chilliness, sick stomach, cutting colic, and tenesmus
Whitish-gray stools.≡ more ...