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Black seed

Scientific names: Nigella sativa

Family: Ranunculaceae

Alternate names: Ajenuz, Aranuel, Baraka, Black Caraway, Black Cumin, Black Cumin Seed Oil, Charnuska, Cheveux de Vénus, Cominho Negro, Comino Negro, Cumin Noir, Cyah Dane, Fennel Flower, Fitch, Graine de Nigelle, Graine Noire, Habatul Sauda, Habbatul Baraka, Kalajaji, Kalajira, Kalonji, Ketsah, La Grainer Noire, Love in a Mist, Mugrela, Nielle, Nigelle de Crête, Nigelle Cultivée, Nutmeg Flower, Poivrette, Roman-Coriander, Schwarzkummel, Seed of Blessing, Siyah Dane, Shoniz, Small Fennel, Toute Épice, Upakuncika

Actions: Analgesic, Antiallergic, Antianxiety, Antiasthmatic, Anticancer, Anticonvulsant, Antidepressant, Antidiabetic, Anti-inflammatory, Antimicrobial, Antiparasitic, Anti-ulcer, Cytotoxic, Hepatoprotective, Hypolipidemic, Hypotensive, Immunological, Renoprotective, Smooth muscle relaxant, Sperm, Thyroid

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Scientific names: Nigella sativa

Family: Ranunculaceae

View all 11 products

Background

Black seed (Nigella sativa) is a flowering plant native to Asia and the Mediterranean. Its seed has been used to make medicine for thousands of years.

Black seed might have effects in the body that help boost the immune system, fight cancer, prevent pregnancy, reduce swelling, and lessen allergic reactions by acting as an antihistamine.

People commonly use black seed for asthma, hay fever, diabetes, high blood pressure, eczema, weight loss, menstrual cramps, and many other conditions, but there is no good scientific evidence to support many of these uses. There is also no good evidence to support using black seed for COVID-19.

Safety Safety definitions

When taken by mouth: Black seed is commonly consumed in foods. Black seed oil and black seed powder are possibly safe when taken in larger amounts for up to 3 months. There isn't enough reliable information to know if larger amounts are safe when used for more than 3 months. Black seed can cause allergic rashes in some people. It can also cause stomach upset, vomiting, or constipation.

When applied to the skin: Black seed oil or gel is possibly safe when used short-term. It can cause allergic rashes in some people.

Special Precautions & Warnings:

Pregnancy: Black seed is commonly consumed in foods. But taking amounts greater than those found in foods while pregnant is likely unsafe. Black seed can slow down or stop the uterus from contracting.

Breast-feeding: There isn't enough reliable information to know if black seed is safe to use when breast-feeding. Stay on the safe side and avoid use.

Children: Black seed oil is possibly safe for children when taken by mouth short-term and in recommended amounts by weight.

Bleeding disorders: Black seed might slow blood clotting and increase the risk of bleeding. Black seed might make bleeding disorders worse.

Surgery: Black seed might slow blood clotting, reduce blood sugar, and increase sleepiness in some people. This can interfere with drugs used during and after surgical procedures and cause severe side effects. Stop using black seed at least two weeks before a scheduled surgery.

Effectiveness

NatMed Pro rates effectiveness based on scientific evidence according to the following scale: Effective, Likely Effective, Possibly Effective, Possibly Ineffective, Likely Ineffective, Ineffective, and Insufficient Evidence to Rate.

Possibly effective Effectiveness definitions

Acne. Applying a gel containing black seed extract to the skin might help to improve acne.
Hay fever. Taking black seed oil by mouth daily might improve allergy symptoms in people with hay fever.
Asthma. Taking black seed by mouth along with asthma medicines can improve coughing, wheezing, and lung function in some people with asthma. But it seems to work only in people with very low lung function before treatment.
A lung disease that makes it harder to breathe (chronic obstructive pulmonary disease or COPD). Taking black seed oil by mouth helps to improve lung function in people with COPD who are also using prescribed inhalers.
Diabetes. Taking black seed powder or black seed oil by mouth daily seems to improve blood sugar levels in people with diabetes.
A digestive tract infection that can lead to ulcers (Helicobacter pylori or H. pylori). Taking black seed powder along with standard therapies might help to get rid of this infection.
High blood pressure. Taking black seed powder or black seed oil by mouth might reduce blood pressure by a small amount in healthy adults. But it's not clear if it helps people with high blood pressure.
High levels of cholesterol or other fats (lipids) in the blood (hyperlipidemia). Taking black seed supplements by mouth can slightly lower total cholesterol, low-density lipoprotein (LDL or "bad") cholesterol, and triglycerides, and increase high-density lipoprotein (HDL or "good") cholesterol in people with or without hyperlipidemia.
Breast pain (mastalgia). Applying a gel containing black seed oil to the breasts during the menstrual cycle seems to reduce pain.

There is interest in using black seed for a number of other purposes, but there isn't enough reliable information to say whether it might be helpful.

Dosing & administration

Black seed oil has most often been used by adults in doses of 1-2.5 grams by mouth daily for 4-12 weeks. Black seed powder has most often been used in doses of 1-2 grams by mouth daily for 8-12 weeks. Speak with a healthcare provider to find out what dose might be best for a specific condition.