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Black Seed Oil Side Effects & Safety

This content is for informational purposes only and does not constitute medical advice. Consult your healthcare provider before starting any supplement. Full disclaimer

Safety Profile

Overall safety rating: Generally Safe

Potential Side Effects

  • GI discomfort (nausea, bloating, burning sensation) especially at higher doses
  • Contact dermatitis in sensitive individuals (topical use)
  • Strong taste and odor of the oil (mitigated by capsule form)
  • May lower blood pressure — monitor if already on antihypertensives

Drug & Supplement Interactions

  • Antidiabetic medications — black seed oil may enhance blood sugar lowering; monitor glucose closely
  • Anticoagulants — thymoquinone has mild antiplatelet activity; use caution with warfarin
  • Antihypertensives — additive blood pressure lowering possible
  • Immunosuppressants — black seed oil has immune-modulating properties; discuss with transplant team

Maximum Dose

Do not exceed: Up to 3g/day oil has been used safely in clinical trials; avoid exceeding 5g/day

Full Black Seed Oil Guide

References

  1. (). Effect of Nigella sativa supplementation on obesity indices: a systematic review and meta-analysis of randomized controlled trials. Complementary Therapies in Medicine. DOI
  2. (). Nigella sativa improves glucose homeostasis and serum lipids in type 2 diabetes: a systematic review and meta-analysis. Complementary Therapies in Medicine. DOI
  3. (). A review on therapeutic potential of Nigella sativa: a miracle herb. Asian Pacific Journal of Tropical Biomedicine. DOI