Black seed oil

Black seed oil is a supplement extracted from the seeds of nigella sativa, a flowering plant that grows in Asia, Pakistan, and Iran.Black seed oil has a long history dating back over 2,000 years.

Black seed oil contains the phytochemical thymoquinone, which can act as an antioxidant. Antioxidants detoxify harmful chemicals in the body called free radicals.

Uses of Black Seed Oil

Supplement use should be individualized and vetted by a healthcare professional, such as a registered dietitian nutritionist, pharmacist, or healthcare provider. No supplement is intended to treat, cure, or prevent a disease.

Although research on the health effects of black seed oil is relatively limited, there is some evidence that it may offer potential benefits. Here's a look at several key findings from available studies.

What Are the Side Effects of Black Seed Oil?

Consuming a supplement like black seed oil may have potential side effects. These side effects may be common or severe.

Common Side Effects

Very little is known about the long-term safety of black seed oil or how safe it is in amounts higher than what's typically found in food. However, some studies have found risks associated with black seed oil, including:

Toxicity: A component of black seed oil known as melanthin (poisonous component) may be toxic in larger amounts.

Allergic reaction: Applying black seed oil directly to the skin may cause an allergic skin rash known as in some allergic contact dermatitis individuals. In a case report, one person developed fluid-filled skin blisters after applying Nigella sativa oil to the skin. However, they also ingested the oil, so it's possible that the blisters were part of a systemic reaction (such as toxic epidermal necrolysis).

Bleeding risk: Black seed oil may slow blood clotting and increase the risk of bleeding. Therefore, you should not take black seed oil if you have a bleeding disorder or take medication that affects blood clotting. In addition, stop taking black seed oil at least two weeks before a scheduled surgery.

For these reasons, be sure to talk with your healthcare provider if you're considering taking black seed oil. In addition, remember that black seed oil is not a replacement for conventional medical care, so avoid stopping any of your medications without speaking with your healthcare provider.