Below are the main rubriks (i.e strongest indications or symptoms) of Merc Viv in traditional homeopathic usage, not approved by the FDA.
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 ...