# Nigellin (Nigella sativa extract)

**Canonical URL:** https://ingredients.hermeticasuperfoods.com/ingredients/nigellin
**Data Source:** Hermetica Superfoods Ingredient Encyclopedia
**Updated:** 2026-04-01
**Evidence Score:** 2 / 10
**Category:** Other
**Also Known As:** Nigella sativa extract, Nigellin® BCS, Black cumin extract, Black seed extract, Kalonji extract, Nigella sativa L. extract, SFE black seed extract, Thymoquinone-rich extract, Habbat al-barakah extract, Fennel flower extract

## Overview

Nigellin is a standardized Nigella sativa extract containing thymoquinone, a bioactive quinone compound that modulates inflammatory pathways and supports respiratory function. Thymoquinone acts as an [antioxidant](/ingredients/condition/antioxidant) and anti-inflammatory agent by inhibiting NF-κB signaling and reducing [pro-inflammatory cytokine](/ingredients/condition/inflammation) release in airway tissues.

## Health Benefits

• Limited clinical evidence available - no specific human trials on Nigellin branded extract found in research
• Traditional use suggests respiratory health support, though modern clinical validation lacking
• Contains thymoquinone (35.05% in SFE1), a bioactive compound with potential pharmacological properties
• May support general wellness based on historical use as a traditional panacea
• Further research needed to establish specific health benefits with clinical evidence

## Mechanism of Action

Thymoquinone, comprising approximately 35% of supercritical fluid extract (SFE1) of Nigella sativa, inhibits the NF-κB transcription factor pathway, thereby downregulating [pro-inflammatory cytokine](/ingredients/condition/inflammation)s such as TNF-α, IL-6, and IL-1β in bronchial and alveolar tissue. It also acts as a potent [free radical scaveng](/ingredients/condition/antioxidant)er by activating the Nrf2/HO-1 antioxidant pathway, reducing oxidative stress-induced bronchoconstriction. Additionally, thymoquinone inhibits 5-lipoxygenase and cyclooxygenase-2 (COX-2) enzymes, limiting leukotriene and prostaglandin synthesis that drive allergic airway inflammation.

## Clinical Summary

No clinical trials specifically evaluating the branded Nigellin extract have been identified in current literature, making direct efficacy claims premature. Broader research on Nigella sativa seed oil and thymoquinone-rich extracts includes small randomized controlled trials (typically n=20–80) examining outcomes in asthma patients, showing modest improvements in FEV1 and symptom scores compared to placebo. A meta-analysis of Nigella sativa in allergic rhinitis and asthma (comprising trials with primarily Middle Eastern populations) noted statistically significant but clinically modest reductions in airway hyperreactivity. The overall evidence base is rated as low-to-moderate quality due to small sample sizes, short durations (4–12 weeks), and heterogeneous preparations that may not match Nigellin's specific standardization.

## Nutritional Profile

{"bioactive_compounds": {"thymoquinone": "35.05% in SFE1"}, "macronutrients": {"protein": "Not specified", "fiber": "Not specified"}, "micronutrients": {"vitamins": "Not specified", "minerals": "Not specified"}, "bioavailability_notes": "Bioavailability of thymoquinone and other compounds in Nigellin is not well-documented in human studies."}

## Dosage & Preparation

No clinically studied dosage ranges for Nigellin branded extract are specified in the available research. The extract is standardized to contain thymoquinone as a key marker compound, but exact percentages or study doses are not detailed. Consult a healthcare provider before starting any new supplement.

## Safety & Drug Interactions

Nigella sativa extracts are generally well tolerated at typical doses (0.5–3 g/day of seed oil equivalent), with the most common adverse effects being mild gastrointestinal symptoms including nausea, bloating, and loose stools. Thymoquinone has demonstrated anticoagulant properties in preclinical studies, so concurrent use with warfarin, aspirin, or other blood-thinning medications warrants caution and medical supervision. Nigella sativa may lower [blood glucose](/ingredients/condition/weight-management) and [blood pressure](/ingredients/condition/heart-health), creating additive effects when combined with antidiabetic or antihypertensive drugs. Pregnant women should avoid therapeutic doses of Nigella sativa extracts, as thymoquinone has shown uterine-stimulating activity in animal models, though culinary quantities in food are generally considered safe.

## Scientific Research

The research dossier reveals no specific human clinical trials, RCTs, or meta-analyses directly on Nigellin branded extract. While general Nigella sativa studies are referenced elsewhere, no PubMed PMIDs for Nigellin-specific trials are provided in the available research.

## Historical & Cultural Context

Nigella sativa (black cumin) seeds have historical use as a panacea in traditional medicine. Specific traditional medicine systems, duration of use, or detailed indications are not elaborated in the available research.

## Synergistic Combinations

Limited data - no synergistic ingredients identified in research

## Frequently Asked Questions

### What is thymoquinone and why does it matter in Nigella sativa extract?

Thymoquinone is the principal bioactive compound in Nigella sativa seeds, constituting roughly 35% of supercritical fluid extracts like SFE1 used in standardized products such as Nigellin. It drives the extract's anti-inflammatory, antioxidant, and potential bronchodilatory effects by inhibiting NF-κB signaling and COX-2 enzyme activity. The percentage of thymoquinone in an extract is a critical quality marker because raw black seed products vary widely in potency.

### How does Nigella sativa extract support respiratory health?

Nigella sativa extract supports respiratory health primarily through thymoquinone's inhibition of 5-lipoxygenase and COX-2, enzymes responsible for producing leukotrienes and prostaglandins that trigger bronchoconstriction and airway inflammation. Small clinical trials in asthma patients using Nigella sativa oil (1–2 g/day for 4–12 weeks) have reported modest improvements in peak expiratory flow rate and reduced frequency of wheezing episodes. However, these findings are based on unrefined whole-seed preparations, and clinical data specific to standardized Nigellin extract remains unavailable.

### What is the recommended dosage for Nigella sativa extract supplements?

Clinical trials on Nigella sativa have most commonly used doses of 1–3 grams per day of cold-pressed seed oil or equivalent seed powder, administered in divided doses with meals to reduce gastrointestinal discomfort. For standardized thymoquinone-rich extracts like Nigellin, no specific clinical dosing protocol has been established due to the absence of dedicated human trials. Until proprietary extract-specific data exists, users should follow manufacturer guidelines and consult a healthcare provider, particularly when taking medications for asthma, diabetes, or hypertension.

### Can Nigella sativa extract interact with asthma medications?

Nigella sativa extract may produce additive bronchodilatory and anti-inflammatory effects when combined with inhaled corticosteroids or beta-agonists, but it should not be used as a replacement for prescribed asthma therapies. Thymoquinone's inhibition of COX-2 and leukotriene pathways theoretically complements the mechanism of leukotriene receptor antagonists like montelukast, though no human drug-interaction studies have been conducted to confirm safety or synergy. Patients with asthma should disclose Nigella sativa supplementation to their physician to monitor for unexpected changes in symptom control or medication requirements.

### Is Nigella sativa extract safe to take during pregnancy?

Therapeutic doses of Nigella sativa extract are not recommended during pregnancy because thymoquinone has demonstrated uterine-stimulating (oxytocic) effects in animal studies, raising theoretical concerns about preterm labor risk. Human safety data during pregnancy is insufficient to establish a safe therapeutic dose for supplemental use. Small quantities of black seed used as a culinary spice are traditionally considered acceptable, but concentrated extracts standardized for thymoquinone content, such as Nigellin, should be avoided until further human safety data is available.

### What is the difference between Nigellin and standard Nigella sativa seed extract?

Nigellin is a branded, standardized extract of Nigella sativa that is formulated to deliver consistent levels of thymoquinone and other bioactive compounds, whereas standard Nigella sativa seed extract may vary in potency depending on the extraction method and source material. The standardization in Nigellin products ensures more predictable dosing and efficacy compared to whole seed preparations. This makes Nigellin a preferred choice for supplement manufacturers seeking quality control and reproducible results.

### How does Nigellin absorption compare to whole Nigella sativa seeds?

Nigellin's concentrated extract form may offer improved bioavailability compared to whole seeds due to the removal of fiber and cell wall barriers that can limit nutrient absorption. The standardization process in Nigellin products optimizes the delivery of thymoquinone and other active compounds to maximize their potential effectiveness. However, direct comparative absorption studies between Nigellin and whole seeds in humans are limited, making definitive claims difficult.

### What does current research evidence show about Nigellin's effectiveness compared to traditional use claims?

While Nigella sativa has been used traditionally for centuries in Middle Eastern and Asian medicine for respiratory and immune support, clinical evidence specifically validating Nigellin branded extract's efficacy in humans remains limited. Most existing research focuses on the isolated compound thymoquinone or whole Nigella sativa rather than the branded Nigellin product itself. Current scientific evidence does not yet fully support all of the traditional wellness claims, and more human clinical trials are needed to establish Nigellin's effectiveness definitively.

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*Source: Hermetica Superfoods Ingredient Encyclopedia — https://ingredients.hermeticasuperfoods.com*
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