Indigo Naturalis- QING DAI 青黛 - 100 CAPS

Treasure of the East’s herbal extracts are full-spectrum, water-based extracts produced by Tianjiang Pharmaceutical. Unlike standardized extracts, which contain a concentrated quantity of a single marker chemical, full-spectrum herbal extracts contain all the active chemical constituents of whole herbs in concentrated form.  Treasure of the East herbs are full-spectrum and extracted using only purified water (more information).

Efficacy of Indigo Naturalis in a Multicenter Randomized Controlled Trial of Patients With Ulcerative Colitis - PubMed (nih.gov)

Effects of indigo naturalis on colonic mucosal injuries and inflammation in rats with dextran sodium sulphate-induced ulcerative colitis (nih.gov)