The effects of Nigella sativa on quality of life, disease activity index, and some of inflammatory and oxidative stress factors in patients with ulcerative colitis

Phytother Res. 2019 Apr;33(4):1027-1032. doi: 10.1002/ptr.6296. Epub 2019 Jan 22.


The aim of this study was to evaluate the effects of Nigella sativa (NS) supplementation in patients with ulcerative colitis. Two grams of NS powder or placebo were consumed for 6 weeks by 46 patients with active mild to moderate ulcerative colitis. Using valid and common questionnaires of colitis severity and blood sampling, we estimated disease activity index, quality of life, and some of inflammatory and oxidative stress factors at baseline and after 6 weeks of supplementation. NS-elevated tumor necrosis factor-alpha and high-sensitivity-c-reactive-protein as well as reduced malondialdehyde (p = 0.01, p = 0.02, and p = 0.005, respectively) compared with placebo. There was no significant difference between the two groups in serum total antioxidant capacity and nuclear factor kB levels. Total scores of Simple Clinical Colitis Activity Index Questionnaire and Inflammatory Bowel Disease Questionnaire-9 were not different between the two groups; however, stool frequency score decreased significantly in NS group. Further clinical trials with different pattern of NS administration (the amount of total and divided daily doses, either powder type or standard extracts/oil and different time arrangement) are needed to clarify the vision.

Keywords: IBDQ-9; Nigella sativa; SCCIAQ; inflammatory factors; oxidative stress; ulcerative colitis.

Publication types

  • Randomized Controlled Trial

MeSH terms

  • Adult
  • Antioxidants / therapeutic use*
  • C-Reactive Protein / metabolism
  • Colitis, Ulcerative / blood
  • Colitis, Ulcerative / drug therapy*
  • Colitis, Ulcerative / pathology
  • Double-Blind Method
  • Female
  • Humans
  • Inflammation Mediators / blood
  • Male
  • Malondialdehyde / blood
  • Middle Aged
  • Nigella sativa / chemistry*
  • Oxidative Stress / drug effects
  • Placebos
  • Plant Extracts / therapeutic use*
  • Powders / therapeutic use
  • Quality of Life*
  • Severity of Illness Index
  • Surveys and Questionnaires
  • Tumor Necrosis Factor-alpha / blood
  • Young Adult


  • Antioxidants
  • Inflammation Mediators
  • Placebos
  • Plant Extracts
  • Powders
  • Tumor Necrosis Factor-alpha
  • Malondialdehyde
  • C-Reactive Protein