Black Cumin Seed Powder

Also known as: Nigella sativa, Black Seed, Kalonji, Habbatus Sauda, Black Onion Seed

Evidence under review. — Not yet rated

Traditional seed with anti-inflammatory and immune-supporting properties. Evidence is promising but limited.

What it does

Black cumin seed powder comes from Nigella sativa, a flowering plant used for centuries in Middle Eastern, South Asian, and African traditional medicine. Its primary active compound, thymoquinone,...
Evidence quality

Evidence base hasn't been formally rated yet. See research below.
Clinical dose

500-2000 mg daily (traditional and general use range; no confirmed clinical dose from provided studies)

What the Science Says

Black cumin seed powder comes from Nigella sativa, a flowering plant used for centuries in Middle Eastern, South Asian, and African traditional medicine. Its primary active compound, thymoquinone, is believed to support immune function, reduce inflammation, and help manage blood sugar and cholesterol levels. While traditional use is extensive and some early clinical research looks promising, no papers were available to confirm specific doses or outcomes for this analysis.

What It Doesn't Do

Not a proven cure for any disease. Won't replace prescribed medications for diabetes, asthma, or hypertension. No solid evidence it causes significant weight loss on its own. 'Blessed seed' marketing claims go far beyond what science currently supports.

Evidence-Based Benefits

Traditionally used to support immune function, with early research suggesting anti-inflammatory activity.

Weak Evidence

Effective at: 500-1000 mg daily (general use; no confirmed clinical dose)

May help modestly lower fasting blood sugar levels in adults with type 2 diabetes.

Weak Evidence

Effective at: 1000-2000 mg daily (general use; no confirmed clinical dose)

May support modest reductions in LDL cholesterol and triglycerides.

Weak Evidence

Effective at: 1000-2000 mg daily (general use; no confirmed clinical dose)

Absorption & Bioavailability

Unknown — thymoquinone (the key active compound) has poor water solubility, which may limit absorption. Oil-based or encapsulated forms may absorb better than raw powder, but no bioavailability data was available from the provided studies.

Red Flags to Watch For

Can interact with blood-thinning medications (e.g., warfarin) — consult a doctor before use
May lower blood pressure and blood sugar, which can be dangerous if combined with medications for those conditions
High doses may cause liver or kidney stress — long-term safety data is limited
Many products on the market are underdosed or adulterated; look for standardized thymoquinone content
Pregnant women should avoid therapeutic doses — traditionally considered a uterine stimulant

Frequently Asked Questions

What does Black Cumin Seed Powder do?

Traditional seed with anti-inflammatory and immune-supporting properties. Evidence is promising but limited.

What is the effective dose of Black Cumin Seed Powder?

500-2000 mg daily (traditional and general use range; no confirmed clinical dose from provided studies)

Is Black Cumin Seed Powder safe?

Can interact with blood-thinning medications (e.g., warfarin) — consult a doctor before use

What doesn't Black Cumin Seed Powder do?

Not a proven cure for any disease.

Research Sources

General knowledge — no paper abstracts were provided for this analysis. Claims reflect traditional use and broadly reported preliminary research, not confirmed findings from reviewed studies.

This information is for educational purposes only and is not medical advice. Always consult a healthcare professional before starting any supplement regimen. Last updated: 2026-05-25