Black Seed Oil
Also known as: Nigella sativa, Black Cumin Oil, Kalonji Oil, Thymoquinone
Effective Dosage
No established dose from provided studies
What the Science Says
Black seed oil is a plant-based oil pressed from the seeds of Nigella sativa, a flowering plant used in traditional medicine for centuries. Early clinical research suggests it may help protect the liver from chemotherapy-related damage and support heart function in children undergoing cancer treatment. It also appears in combination formulas studied for fatty liver disease, though it is difficult to isolate its specific contribution from those multi-ingredient products.
What It Doesn't Do
Not proven to treat cancer on its own. No solid human evidence it cures infections, reverses diabetes, or boosts immunity in healthy adults. The aromatherapy study used it as a carrier oil mixed with other essential oils — that tells us nothing about taking it as a supplement. Lab and animal studies on its active compound thymoquinone do not translate directly to human benefits. Don't confuse fish-tank research with human clinical proof.
Evidence-Based Benefits
Contains thymoquinone. Some evidence for anti-inflammatory, blood sugar, and cholesterol effects.
Moderate EvidenceEffective at: 1-3g daily
Source: Examine.com, PubMed
Absorption & Bioavailability
Unknown — no pharmacokinetic data provided in the available studies. Thymoquinone, its key active compound, is being studied in nanoemulsion formats to improve delivery, suggesting standard absorption may be limited.
Red Flags to Watch For
- Most human studies are small (20-40 patients) and conducted in pediatric cancer populations — results may not apply to healthy adults
- Several provided papers study black seed oil only as part of multi-ingredient formulas or carrier blends, making it impossible to attribute effects to black seed oil alone
- Animal and lab studies (fish, rats, mice) dominate the recent literature — these do not confirm human benefits
- No standardized dose exists for general consumer use based on the available evidence
- Products marketed for weight loss, blood sugar control, or immune boosting have no support from the studies provided here
Research Sources
- PubMed
- NIH DSLD
This information is for educational purposes only and is not medical advice. Always consult a healthcare professional before starting any supplement regimen. Last updated: 2026-04-06