PlainPill

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.

56
User score
Mostly positive
32% positive14% mixed3% negative52% unclear

Of reports that state an outcome, 65% are positive.

Clinical research
BModerate research base
2
meta-analyses
9
RCTs
179
papers

What Black Seed Oil does, according to users

Of the people who reported each effect, the share who said it got better.

What the research says

Systematic reviews and meta-analyses from PubMed, with their published conclusions.

BModerate research base

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.

Int J Environ Res Public Health · 2019 · Meta-analysis / systematic review
Effects of Nigella Sativa on Type-2 Diabetes Mellitus: A Systematic Review

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 ↗
Int J Chron Obstruct Pulmon Dis · 2021 · Meta-analysis / systematic review
Effects of Nutritional Interventions in Individuals with Chronic Obstructive Lung Disease: A Systematic Review of Randomized Controlled Trials

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.

1 teaspoondaily
1250mgas reported
winteras reported
1 tablespoon1-2 hours before bed
1 tablespoon2x daily
1 tbsptwice daily

Reported side effects

How often each side effect came up across all reports.

stomach issues ×4nausea ×3oily skin ×1heartburn ×1initial low ×1flatulence ×1vivid dreams ×1strong taste ×1

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”
Source discussion ↗
“Black cummim oil - check metastudy on this, and be stood in amazement.”
Source discussion ↗
“Black seed oil (teaspoon every day)”
Source discussion ↗
“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”
Source discussion ↗
“This stuff is a MASSIVE help for anxiety. within the first dose, i felt a wave of calming euphoria that lasted throughout the day”
Source discussion ↗
Top discussions (5)

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