Black Seed Oil (Nigella sativa): Clinical Evidence & Substantiation Summary

Clinical Trials
26
Strongest Evidence
Immune & Metabolic Support
Typical Dosage
1–3 g/day (oil) or 200–500 mg thymoquinone
Common Forms
Cold-pressed black seed oil

What Is Black Seed Oil (Nigella sativa)?

Black seed oil from Nigella sativa has been used in traditional medicine for over 2,000 years. Its active compound thymoquinone has demonstrated anti-inflammatory, antioxidant, and immunomodulatory effects across a growing body of clinical trials.

Mechanism of action: Thymoquinone activates AMPK, inhibits NF-κB and NLRP3 inflammasome, and modulates Th1/Th2 immune balance. It reduces inflammatory eicosanoids via COX and LOX inhibition and enhances Nrf2-mediated antioxidant gene expression.

Clinical Evidence Summary

Below are 3 key clinical studies on Black Seed Oil (Nigella sativa). Nutra Comp analyses 26+ studies in its full clinical evidence report.

Meta-analysis2019PMID: 31232416

Nigella sativa and metabolic syndrome: a meta-analysis

Population: 13 RCTs, 875 participants

Key finding: Black seed supplementation significantly reduced body weight (WMD: -2.1 kg), fasting glucose (WMD: -17.8 mg/dL), and total cholesterol (p<0.001).

Systematic review2019PMID: 30193758

Nigella sativa for immune modulation

Population: 16 clinical studies

Key finding: Black seed enhanced natural killer cell activity and balanced inflammatory/anti-inflammatory cytokine ratios in multiple clinical populations.

Meta-analysis2020PMID: 32587745

Thymoquinone and inflammatory markers: a meta-analysis

Population: 8 RCTs

Key finding: Thymoquinone supplementation significantly reduced CRP (WMD: -1.58 mg/L, p=0.002) and TNF-α levels in inflammatory conditions.

Evidence-Based Structure–Function Claims

Sample FDA-compliant structure–function claims generated by Nutra Comp, each linked to clinical evidence and scored for confidence.

7
Supports healthy immune system function
Category: Immune · Confidence: 7/10
7
Supports healthy inflammatory response
Category: Anti-inflammatory · Confidence: 7/10
7
Supports healthy metabolic function
Category: Metabolic · Confidence: 7/10

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Related Ingredients

Omega-3 Fatty Acids
214 studies · Cardiovascular Health
Quercetin
36 studies · Immune & Anti-inflammatory
Turmeric
91 studies · Inflammatory Response

Key Terms

Randomised Controlled Trial (RCT)Meta-AnalysisStandardised Extract

Frequently Asked Questions

Is black seed oil FDA approved?

Black seed oil is a dietary supplement under DSHEA. It does not require FDA approval. It has a long history of traditional use across multiple cultures.

What are the most studied benefits?

The strongest evidence supports black seed oil for metabolic syndrome parameters (weight, glucose, cholesterol), immune modulation, and anti-inflammatory effects.

What dosage is used in clinical studies?

Most studies use 1–3 g/day of black seed oil or 200–500 mg/day of standardised thymoquinone extract.

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