What You Need to Know: Black Seed Oil Side Effects

black seed oil side effects

Black seed oil comes from the seeds of the ‘Nigella Sativa‘ and has low to no side effects for the majority of its users. Since it affects the immune system directly, a proper precaution to take would be to consult your physician before starting to take it daily.

Recipe bonus! Click here to get our free & easy 7 black seed oil recipes!

What are Black Seed Oil Side Effects?

Black seed oil side effects are close to none compared to other supplements one might take. This low level of side effects is mainly because black seed oil is extracted from naturally grown seeds that come from (Nigella Sativa) the earth.

This leaves out any chances for artificial ingredients being added to alter the balance of this nutrient rich herb.

black seed oil is extracted from naturally grown seeds that come from (Nigella Sativa) Click To Tweet

black seed oil side effects


Black seed oil pregnancy concerns are regularly searched on the internet, and evidence and facts show that black seed oil can be taken throughout the pregnancy without issues or complications.

Black seed oil and pregnancy can provide benefit to the mother and the baby in the womb, due to the positive effects black seed oil have in cognitive development.

Due to its effects on the immune system and throughout the body, one must take into consideration the dosage of black seed oil.Taking black seed oil daily has shown to improve majority of conditions and ailments . Proper dosage is based upon one’s status and the length of time needed to be cured.

Good scientific evidence suggests that black seeds may be useful in the treatment of lung disorders, with more studies suggestion black seed oil to be effective in the treatment of other conditions such as allergies, diabetes, and high blood pressure.black seed oil side effects

In short, there are no known side effects of black seed oil; the most important thing to consider is the amount taken (which shouldn’t be more than one tablespoon daily).

Also read: Green Coffee Bean Extract Benefits

Below is a list of dosage based upon the condition and treatment:

(Dosage suggestions are for people 12 years and older)

Acne: ½ teaspoon of black seed oil and inhalation of vapor of hot water.

(Most) Addictions: 500 milligrams of black seeds with black seed oil three times daily for up to 12 days.

Allergies: 40-80 milligrams per kilo of black seed oil three times daily for up to 8 weeks.

Anti-fungal: Wipe affected area with cider vinegar, followed by black seed oil three times daily for eight weeks.

Anxiety: ½ teaspoon of black seed oil with herbal tea.

Bruises: 1 teaspoon of black seed oil with one teaspoon of olive oil three times daily.

Colds: 1 teaspoon of black seed oil three times daily.

Arthritis: 1 teaspoon of black seed oil with one teaspoon of olive oil three times daily.

Cough: Rub your chest and back with black seed oil and take one teaspoon three times daily.

Diabetes: 2.5 milliliters of black seed oil twice a day for six weeks, in addition to existing methods prescribed by your physician.

Colic: Massage warmed black seed oil on the abdomen.

Diarrhea: 1 teaspoon of black seed oil with 1 cup of yogurt twice daily.

Earache: ½ teaspoon of black seed oil mixed with ½ teaspoon of olive oil warmed and dripped into the affected ear. Leave in place with a cloth.

Headache: ½ teaspoon of black seed oil three times daily, taken with a meal. Also, rub black seed oil on the sides of the head and near the ears.

Hair loss: Stroke lemon throughout the scalp and then Apply ½-1 teaspoon of black seed oil and leave in for 15-20 minutes.

High blood lipids: Take 2.5 milliliters of black seed oil twice daily for six weeks with other lipid-lowering agents.

High blood pressure: Take 1-2 teaspoons of black seed oil and add it to a hot drink mixed with two cloves of garlic before breakfast.

Muscle soreness: 1 teaspoon of black seed oil and one teaspoon of olive oil three times daily.

Asthma: Take one teaspoon of black seed oil with boiled vaporized inhalations of black seed oil.

Sinusitis and Acute sinusitis: Take one teaspoon of black seed oil daily. Acute- Take one teaspoon of black seed oil three times daily.

Stomach Disorders: Drink mint tea with lemon and a teaspoon of black seed oil three times daily.

Allergies: If you’re sensitive or allergic to black seed oil or members of the Ranunculaceae family. Allergic contact dermatitis has been reported.

Pregnancy and Breastfeeding: Due to its aiding in menstrual cycles, mothers are cautioned not to take a high dosage of black seed oil during conception.

Also Read: Benefits of Probiotics


We found that black seed oil is useful for a lot of different ailments and conditions. With proper dieting and effective dosages, the majority of users found relief from the conditions they were suffering from.

Although side effects are low to non-existent, always make sure your system can tolerate and consume a new supplement.black seed oil side effects

It’s upon you to always double check with your physician when starting any supplement intake and dieting.

Share your thoughts below: What side effects have you experienced while taking black seed oil?


86 thoughts on “What You Need to Know: Black Seed Oil Side Effects

  1. Diana S says:

    Hello I heard about the great things this oil does tried it starting with 1/2 teaspoon with food. Had extreme diareah. I quickly cut back to just a few drops. After a couple of days started feeling week then stopped all internal use. Wanted to correct diabetic symptoms. Am taking 1000 milagrams a day of chromium. Off med for nearly 2 years. Last A1C was 6. Is there any known interaction with chromium? Thanks

    • Ed Small says:

      That’s funny, I take a teaspoon three times per day for 3 years now and I have had no ill effects from this oil at all. In fact, my health has improved tremendously. Are you absolutely sure you were taking oil of Nigella Sativa? I can’t imagine why you would react to it negatively. Maybe your body just isn’t made like mine. Some people can’t eat strawberries or tomatoes. While other people have no problem with strawberries or tomatoes. Some people get terrible diarrhea from prune juice, while United States Senator Strom Thurmond drank prune juice every day without any problems. I read it somewhere that he attributed it to one of the causes of his longevity. He lived to the age of 100 years. Perhaps he could have lived to the age of 110 years or more if he had taken Nigella Sativa regularly. You never know. Well, I am going to continue taking my Nigella Sativa Black Caraway seed. I crush the seeds in a coffee grinder and put it in honey. The oil on the market is much too expensive. Good God (as the late great James Brown, godfather of soul would have said), I wouldn’t be able to afford to get a hair cut if I bought the oil on the market. The seeds are much less expensive and they provide much more benefit. I’m sorry for you that you are unable to benefit from the consumption of this wonderful oil, there is really nothing that compares to it. For what were you taking it? Diabetes, Hypertension, Hyperlipidoemia, Inflammation, Respiratory ailment, HIV, other viral illnesses, Cancer? Well good luck. And if you were taking it for an ailment, I hope it is resolved. Godspeed.

    • Vasilios says:

      Yeah it’s ok to take blackseed oil with blood pressure mess . Try take them far apart like one in the morning and the other at night that’s what I do and just take a teaspoon full and wash down with water before bed and u will sleep well. . If u start to feel dizzy go to ur doctor coz u mite have to reduce blood pressure tablets coz the oil helps lower ur pressure . I’ve been taking both for months now no issues at all

      • Michelle says:

        but I thought with continued use, the black seed oil is the replacement for blood pressure meds, and diabetic meds because it lowers the blood pressure and helps regulate insulin?

        • Sylvia says:

          But how long have you been taking the black seed tablets ? And how high was your blood pressure when you started taking the tablets ?

  2. Marilyn Chappell says:

    I took black seed oil before called Amazing herbs with no side effect, but this time I bought Kalonji oil which i believe is the same thing, from an India store. This one i notice cause me to be dizzy. I cut back on the dosage, but i am wondering if it make a difference on the brand or where the black seed came from. Also this one says 100 % pure oil. The Amazing herb one says Cold pressed oil maybe thats the difference. Does the oil need refrigeration.

    • Vasilios says:

      It’s dropping ur blood pressure . That can. E a good thing if it’s too high . Go to ur fix get pressure checked .

      • Otuije Maryjane says:

        Please what is the recommended dosage of black seed oli and the grounded seed fro an elderly woman that has dimensial and Alziamia. MaryJane

    • Laura says:

      There is a difference in cold pressed and 100% pure. On the positive side, the pure version, you do not have to use as much.

  3. Bo says:

    My father is suffering from congestive heart failure and his appetite is very low. He is not eating much. He has lost lots of weight.

  4. Jody Roper says:

    Just took my first Tsp. Of black seed oil and it made me feel like my heart was racing and now I feel strange. I know there are no known side effects, not sure if this is psychological, anyone else feel strange after first starting? I have had the blank seed oil pills with no problems but this was a virgin black seed oil liquid.

    • Garrick says:

      I had the same feeling of racing pulse and indigestion for more than a day with the cold pressed black seed oil-it was the first time I’d taken it (one teaspoon)

    • Vasilios says:

      Do t worry it just gives u a bit of a kick wen u take it coz it’s putting oxygen into your blood and it’s just great for circulation so don’t worry I get same thing doesn’t last long . If ur worried then see ur fix but they don’t know about the great benefits of this oil

    • Michelle says:

      I’ve had no issues with starting mine. You have to be careful where you get the black seed oil from. I was told to make sure I purchased from an authentic Indian store. Not the GNC’s and supplement stores because they still put some extra stuff in it. Even when buying online be careful

    • Matt says:

      I didn’t experience that when started taking it. I do know that a increased heart rate after ingestion can be food allergies or sensitivity.

    • Shalona King says:

      Hey Francis Perera, i was just asking my uncle if the black seed oil can help with heart burn. If im reading this right did you say it gave you heartburn?

      • Eve says:

        This oil has worked wonders in my life and my moms, slowly curing her of arthritis , however it can cause severe heart burn on some days smh

  5. Zulfa Dominick says:

    I also.started using the cold pressed oil and started getting dizzy spells and just feeling weird, like palpitations I’m not sure how to describe it. Like blood pressure is all over. The capsules had no side effects though. Will try reducing to less than I tsp of oil n see if it still happens.

    • Adriel says:

      I felt the same way. I took less than a teaspoon and still got the same bad feeling. The only difference was that it took longer for me to start feeling bad.

  6. Chakra says:

    I have started using this. 5ml of this oil + 5 ml of Olive oil. First two days, only some burping, no other issues. Now getting a slightly sore throat. Thinking of reducingthe dosage.

  7. Randall Edney says:

    Best thing I have ever taken and Im not the pill popling type. All together feel better. More energized and even the libido has gotten stronger at 42.

  8. David Brian says:

    I’m taking “Amazing Herbs Black Seed 100% pure cold-pressed black cumin seed oil” for the first time. (1 tablespoon by mouth) with an apple, mixed nuts and elderberry tea. At first the taste is bland but Then quickly changed to an oily bitter taste. #blackseedoil

  9. Vasilios says:

    I’ve been taking black see oil for a year now at night and I sleep like a baby . Sometimes it give me a mild rush for very short time nothing to worry about it’s great for your health and lowering blood pressure. Don’t take too much coz u will get the runs . Once a day is fine . If u want to lose weight take it in water and honey and cinnamon powder and scull it down . This will make the fat fall off . It’s true .

  10. Nyla Shaddai says:

    What is you have several medical conditions. I have hypothyroid which may be causing my blood pressure issues. It has elevated some. How do you measure the dosage then?

  11. Graciela says:

    With 1/2 teaspoon of black seed oil I feel very bad, I feel full stomach, nausea, burned stomach and dizziness, and burping all night, please tell me if is it normal?

    • dusty smith says:

      was having 1 t/sp twice daily after 1st 250ml bottle was always feeling sickly,so next bottle I cut down to half t/sp twice a day….still gradually got sicker….feeling liver an gall was involved somehow….got through the bottle an decided would not take anymore to see if symptions would go away….an they did…..so it seems the oil affected my struggling liver…..just a point

      • Sincere says:

        Oh my God I have gone through the same thing of getting sick and throwing up while using the amazing herbs cold press black seed oil … I started off with taking a tsp 2-3 times daily for the last month and a half and I promise to God this stuff works my energy ,Libido ,Circulation, my tired leg that I have from diabetes was back to normal,And my energy/oxygen when running is off the chain I swear it’s great stuff !!. But friggin all of a sudden My body is rejecting it my liver are , I think my gallbladder it’s feeling the oil ..I’ve been throwing up every time I take it over the last three weeks. I’ve made three attempts at taking it in the last three weeks with days off of it in between up until yesterday while at work and I friggin threw up again damm … I felt woozy like fainting ,nausea and then a hot spell and major cramping in my stomach an I finally threw up again . I’m sorry folks but that was it for me I can’t stand the smell of the oil anymore.. now Im stuck with three extra bottles of the stuff I just won’t ingest it any more but I’ll use it as a topical aid for inflammation.. damm I loved this stuff hey by the way I have lost 31 pounds during the use of black seed oil in just a month and a half also ..so trust me I’m not bad mouthing the stuff because I recommend it to 5 people that are currently using the product and they all swear by the same are similar health results especially the part about leg pain going away that’s almost instantaneous .. So I guess I’ll just take the good with the bad … all this being said this is not a BS message I’m not trying to discourage anyone from the use of this product I suggest paying attention to your body and the results and no when to quit taking black seed oil if you got to don’t over due it God Bless everyone and best of health

  12. Sinn says:

    Hello…I am experiencing alot of acne over the top half of my body since i have been taking black seed oil and drinking alkaline water…Could this be a side effect of the black seed oil?

    • Scott says:

      Stop taking alkaline water! You have low stomache acid. Get some HCl and diestive enzymes and changes your diet. Cyt out sugar. Grains. Starches. And raw veggies.

  13. Sharon Chambers says:

    Any known cures for Multiple Sclerosis symptoms ie. Migraines, muscle SPASMS, imbalance,brain and spinal lesions

  14. Memfis says:

    My blood sugar has spiked considerably, up to 265. I’m not sure if the Blk. Seed Oil caused it. I’m at Care Now to check it out.
    I usually have no problem with diabetes unless I’m on high does of Prednizone. I’ll you posted

  15. ollie Johnson says:

    Fourth day experienced some stomach cramps and sticky feeling. I drank a lot of water and used the bathroom with about 5 bowl moment. Feel fine this morning!

  16. Bless says:

    Am in South Africa and am HIV Positive, where can I find this black seed oil in South Africa and what kind of black oil do I need to take as there is a variety.

    • Mary says:

      The doctor in Africa that was using Black Seed Oil for HIV.. was giving 5ml that equals 1 tsp.
      3x a day for 6 weeks. mixed with warm water and honey. the studies showed his blood work improved. in fact after treatment showed no HIV present.. the only med used was black seed.. so I would surely check with a doc if you are on other meds. If you buy this be sure it is a trusted brand. it should say Nigella sativa cold pressed. There was stomach upset reported with this dose. If you have any known allergies you should question the seller for info.

  17. Kathleen says:

    I was taking black seed oil a teaspoon daily and started having my tongue get very dry. Stopped taking it and the dry tongue stopped within a few days. But I don’t know if this was an interaction with other meditations I take for my heart, thyroid and acid reflux.

  18. adidi jaybian says:

    i have a serious heart problem and i don”t know if i will get good result by taking the black see oil?

  19. fadia says:

    my child has a social withdrawal problem and paces the floor a lots. she is 21. will black seed oil help her?. Anyone has any experience with this.

  20. Pamela C Washington says:

    Saturday was a Bad day with the black seed oil. Sunday was a Good day! Felt good. Voice came back. I could sing high notes. No pain in my joints. Lots of energy! I know about all the benefits but worried about trying to swallow it. Got a bit of a sore throat last night… Are the pills any good?
    Also, if I want to delete a previous post, how do I do that? Don’t want to scare anyone away from trying it.

  21. Josephine says:

    I have a very normal blood pressure, basically more to the lower side than to the high. I’m a little concern about taking the black seed oil because it might lower my blod pressure. I need to improve my immune system and that is really the reason i woul like to start taking it.

  22. Josephine Scoggins says:

    I have a very normal blood pressure, basically more to the lower side than to the high. I’m a little concern about taking the black seed oil because it might lower my blod pressure. I need to improve my immune system and that is really the reason i woul like to start taking it.

  23. Chipppies says:

    I take 10 drops of black cumin oil mix with milk 1 spoon of pure honey 5 pieces of saffron and boled for 2 minutes in microwave.
    Is this any danger to damaged my liver .for warming the black cumin oil

  24. Larry says:

    I have inclusion body myositis a progressive disease that destroys your quad muscles. It’s an autoimmune disease. Do you think it would do me any good?

  25. Melody L. says:

    Has anyone had success with this for severe constipation and ulcers? I want to try it but can’t risk making constipation worse.

  26. TERRY L KELLY says:

    I started talking the Kalonji Oil for over a month ago and I like it. Only problem I am having trouble with is my face feels like it’s breaking out internally every few days and I have a small rash under my right arm. I follow the oil with organic honey every time I take it. I am eating less sweets but is that fighting against my body? I have cancer, diabetes, and high blood pressure in my family’s health history. I want to make sure I am doing all I can not get the diseases my parents passed away from.

  27. Porsche says:

    How Can one use it for very chronic illness what’s the pure measurement cos it’s seem like a very powerful oil and needs right way of using

  28. Ali says:

    How does blackseed effect menstration, I’ve been irregular for the two months of taking it. I feel great otherwise but this is a bit concerning as I have prolonged pms and cramps but no actual cycle.

  29. Delores says:

    I want to start taking Black Seed Oil, but I already have some heart palpitations, thyroid disease, and high blood pressure. any thoughts on my situation?

  30. Ursula Gehler says:

    I started using Black Seed Oil because a friend told me it might help with cancer. Having to endure Chemotherapy is no fun. Every time I had to get a blood test beforehand …… and every week the oncologist was surprised to see that my test results were excellent! As the treatment puts a lot of pressure on the production of white of white blood cells, the test was needed to see where the patient stood. Sometimes they have to stop or postpone the next session. I was told that I practically “sailed through” the treatment which I had once a week for 5 months with 2 potent chemo drugs. I did not have much pain. My hair grew back and is very thick. I definitely keep taking Black Seed Oil for the rest of my life. I am 70 years old. Great productu

  31. Ajvazi says:

    In the islamic books of religion black seed oil it know to cure everything except death. If you post something on the web please post the truth and do not try to mislead people.

  32. Diane Myers says:

    I have been taking black seed oil, one teaspoon a day fo approximately 2 months. I’m also on Klonopin .05 mg twice a day and Celexa 20 mg once a day, for a very lengthy time. I have fibromyalgia. Recently, I’ve noticed an increase in anxiety, but less headaches and nausea. I tried decreasing meds thinking it might be too much, but I went back to my normal dosage and still feel full of anxiety. Not sure what is happening or if it’s just the fibro. I was able to get off Omeprazole. I believe it was causing too many problems, causing me gastro distress which has subsided quite a bit. Thank you.

  33. Kimlee says:

    My first three days I received a headache and my throat was sore and I had a bit of anxiety bu know nothing but I am losing weight and I feel better o believe the side effects is the product getting all the garbage out of you. You know how when you detox at first you get sick then you feel better. I take the pill form I believe liquid is more potent and circulates through your system quicker try taking half the dosage and document how you feel

  34. Kim says:

    I have been taking a teaspoon twice a day for a few months to boost my immune system and it seems to be working!!! Whenever I feel like I might be getting sick I take a little more throughout the day and my body will start to feel really tired and achy but I won’t get sick! After about a day I’ll feel fine! I assume the tired achy feeling is the oil helping my body to fight the virus. But I have a friend who had to stop taking it because it made her feel hot, itchy and irritable so each person must react differently.

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