Black Seed Oil for High Blood Sugar
What studies show for fasting glucose and HbA1c.
Key takeaways
- Meta-analyses found modest drops in fasting glucose and HbA1c.
- It can add to diabetes medication effects.
- Monitor your levels and talk to your doctor.
Does black seed oil lower blood sugar?
A meta-analysis of trials in type 2 diabetes found Nigella sativa lowered fasting blood glucose and HbA1c.[1] Effects in people without diabetes are less clear.
Full guide: black seed oil for type 2 diabetes.
Signs of high blood sugar
- Increased thirst and urination
- Tiredness
- Blurred vision
- Slow-healing cuts
When to see a doctor
Black seed oil and oregano oil are not a substitute for diagnosis or prescribed treatment. See a healthcare professional if symptoms are severe, getting worse or not improving.
Frequently asked questions
How fast does black seed oil lower blood sugar?
Studies measured changes after 8–12 weeks of daily use.
The bottom line
Black seed oil may modestly lower blood sugar. Use it with medical guidance if you have diabetes or prediabetes.
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Sources
- Daryabeygi-Khotbehsara R, Golzarand M, Ghaffari MP, Djafarian K. Nigella sativa improves glucose homeostasis and serum lipids in type 2 diabetes: a systematic review and meta-analysis. Complement Ther Med. 2017;35:6-13.
- Tavakkoli A, Mahdian V, Razavi BM, Hosseinzadeh H. Review on clinical trials of black seed (Nigella sativa) and its active constituent, thymoquinone. J Pharmacopuncture. 2017;20(3):179-193.
