Conclusion: Nigella sativa was shown to significantly improve laboratory parameters of hyperglycemia and diabetes control after treatment with a significant fall in fasting blood glucose, blood glucose level 2 h postprandial, glycated hemoglobin, and insulin resistance, and a rise in serum insulin. In conclusion, these findings suggested that Nigella sativa could be used as an adjuvant for oral antidiabetic drugs in diabetes control.
PubMed 31817324 ↗Black Seed Oil
People mainly take Black Seed Oil for anxiety, mood, sleep. Based on 111 first-hand reports and 2 meta-analyses & systematic reviews in the medical literature. Ranked #38 of 1,974 overall.
Of reports that state an outcome, 65% are positive.
What Black Seed Oil does, according to users
Of the people who reported each effect, the share who said it got better.
8 more with fewer than 3 reports
What the research says
Systematic reviews and meta-analyses from PubMed, with their published conclusions.
At least one meta-analysis, or 5+ randomized controlled trials. The grade measures how much human research exists — read the conclusions below for what it found.
Conclusion: Increasing intake of fruits and vegetables over prolonged periods might have positive effects on lung function in individuals with COPD. Some nutritional interventions also observed effects on systemic inflammation, health-related quality of life, and physical function, although with some mixed results. Many of the trials were underpowered, had high dropout rates, or had a high risk of bias. Further research should investigate effect of prolonged dietary interventions.
PubMed 34819725 ↗Dosage people report
As stated by users — not a recommendation. Follow the label or your doctor.
Reported side effects
How often each side effect came up across all reports.
What users say
Verbatim quotes, shortened only — each links to the original discussion.
“black seed oil is good (more of a supplement than calorie source”
“Black cummim oil - check metastudy on this, and be stood in amazement.”
“Black seed oil (teaspoon every day)”
“within a few days it seems that it has improved overall by 20% -30%... reduced my horrible hot flashes... reduced the peak of the panic attack... slight improvement in severe anhedonia”
“This stuff is a MASSIVE help for anxiety. within the first dose, i felt a wave of calming euphoria that lasted throughout the day”
Other options for anxiety
User data from public discussions; research from PubMed. Information only, not medical advice — talk to a doctor before starting, stopping or combining anything. Data updated October 2, 2026. How we rate