Black seed oil side effects

Black seed oil side effects

Black seed oil is used worldwide as a medical cure-all for acute and chronic illnesses ranging from cancer to diabetes and skin issues. If you’re taking black seed oil as a treatment here is what you need to know about its potential side effects.

Black seed oil side effects

To date, there have been over 630 studies on black seed and its derivative powder and oil. The research suggests the benefits far outweigh a short list of very minor side effects. The studies do not show whether large quantities of black seed oil have more negative side effects. Black seed oil is safe for most people, especially in low doses or when used in food preparation.

Black seed oil is naturally prepared. It is pressed from the seeds of the Nigella Sativa plant and created with no additional artificial ingredients.

However, there are certain groups that should be cautious when eat black seed oil or using it as a health or beauty treatment.

Pregnant women 

Black seed oil may slow down, stop or hamper natural contractions of the uterus. In small amounts it is likely safe for pregnant women. Though, large more therapeutic doses should be put on pause during pregnancy and while breast-feeding.

When it comes to pregnancy it is best to remain cautious. Avoid taking black seed oil during these times. Make sure you consult with your physician.

Black seed oil may be safe but the research on black seed oil and pregnant or nursing women is limited. One research study conducted by King Saud University in 2009, showed black seed oil benefits for the offspring of a group of mice. The study reported that it “may prove beneficial to the offspring if consumed by their mothers before and during pregnancies”. Read more about the study here.

However, more studies with larger groups are necessary required to back up these beneficial claims.


It’s likely safe for children to take black seed oil in small doses. If you are using large quantities to treat medical issues consult with a physician.

Blood Thinners and Bleeding Disorders

People on blood thinning medications (such as Warfarin, Herperin etc.) or who suffer from bleeding disorders should NOT take black seed oil. Black seeds and black seed oil may slow the ability of the blood to clot. Thus, black seed oil increases the risk of bleeding.

It is also best to refrain from using black seed oil prior to and after major surgery. It is best to stop taking black seed oil two weeks prior to any major surgery.


There have been a number of studies that show black seed oil is useful for treating diabetes. However, black seed may lower blood sugar levels so it is important for diabetics to regularly monitor their blood sugar levels while on black seed oil. Since black seed oil way lower blood sugar levels, some diabetics will be at a higher risk for hypoglycemia.

People with low blood pressure 

If you have low blood pressure, stop taking black seed oil.  It’s possible that black seed may lower blood pressure. Low blood pressure is dangerous and even fatal.

The bottom line on side effects of black seed oil is that they are minor. Though there have been many studies, the research samples sizes are not large enough and the studies not in-depth enough to conclude if there are, in fact, any major health risks with black seed oil.

Rest assured black seed oil is an all-natural curing agent. It is made from one ingredient (black seeds from the Nigella Sativa plant) and is created with no additional ingredients.

Posted in Learn.