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Head-to-head evidence comparison — which supplement is right for you?
Black Seed Oil wins 1 of 3 categories. Both are solid choices — the best pick depends on your specific goals.
Verdict
Likely helps
11 of 12 studies with measurable effects showed benefit.
Top outcomes
Verdict
Likely helps
5 of 6 studies with measurable effects showed benefit.
Top outcomes
Shared outcomes (2)
Outcomes where both Black Seed Oil and Chlorella have evidence — compare verdict strength side-by-side.
1-3g oil (or 200-400mg thymoquinone)
With meals
Cold-pressed oil softgels
3-10g daily
Before meals for detox, With food if GI sensitive, Away from medications (may bind)
Broken cell wall chlorella powder or tablets
4-8 weeks
4-8 weeks
8-12 weeks
4-8 weeks
4-8 weeks
8-12 weeks
First 1-2 weeks
Does Nigella sativa supplementation improve cardiovascular disease risk factors? A comprehensive GRADE-assessed systematic review and dose-response meta-analysis of 82 randomized controlled trials
Pharmacological research (2025) · Meta analysis · n=5026
Our findings suggest that N. sativa could be a promising adjunct therapy for improving cardiovascular disease (CVD) risk factors.
A systematic review on anti-diabetic plant essential oil compounds: Dietary sources, effects, molecular mechanisms, and safety
Critical reviews in food science and nutrition (2024) · Systematic review
They can also significantly inhibit the generation of TBARS and MDA, reduce oxidative stress, increase insulin levels, adiponectin, and glycoprotein enzymes, boost antioxidant enzymes like SOD, CAT, and GPx, as well as reduce glutathione and vital glycolytic enzymes.
Effect of Nigella sativa Intake on Oxidative Stress and Inflammation in Patients with Metabolic Syndrome and Related Disorders: A Systematic Review and Meta-analysis of Randomized Controlled Trials
Current pharmaceutical biotechnology (2024) · Meta analysis · n=1033
In addition, SOD: (SMD: 1.35; (95% CI, from 0.77 to 1.93); P = 0.00) and TAC (SMD: 2.82; (95% CI, from 0.55 to 5.084); P = 0.01) levels significantly increased in the intervention group compared to the placebo group.
Identifying immunostimulatory herbal supplements that may flare autoimmune skin diseases: a systematic scoping review
Lupus science & medicine (2025) · Systematic review · n=469
We identified 227 herbal supplements with immunostimulatory properties, of which 15 were most strongly supported by the evidence.
Effect of supplementation with Chlorella vulgaris on lipid profile in adults: A systematic review and dose-response meta-analysis of randomized controlled trials
Complementary therapies in medicine (2022) · Meta analysis · n=539
We found that Chlorella vulgaris supplementation had a beneficial effect on TC and LDL-C levels with no significant effect on TG and HDL-C levels.
Dietary Interventions in the Management of Fibromyalgia: A Systematic Review and Best-Evidence Synthesis
Nutrients (2020) · Systematic review
It is estimated to have a worldwide prevalence of 1.78%, with a predominance in females.
Based on meta-analysis of 1086 participants showing significant reductions in CRP and TNF-α, but no effect on IL-6. High heterogeneity between studies limits confidence.
Meta-analysis of 797 participants showed significant reduction in total cholesterol (-14.57 mg/dL) and LDL-C (-11.27 mg/dL). Subgroup analysis indicated doses >4g/day and duration ≥8 weeks were required for significance. No effect on HDL-C or triglycerides.
AI-estimated from published studies. Interpret as directional guidance.
Black Seed Oil has a higher evidence score (6.5/10 vs 6.5/10) and wins in 1 of 3 categories.
For fertility support, Black Seed Oil has a higher relevance score (80 vs 60).
No known interactions between Black Seed Oil and Chlorella have been documented in our database. However, always consult a healthcare provider before combining supplements.