Clinical Benefits
Clinical Benefits
Black seed oil capsules offer powerful support for immune system regulation, particularly in addressing Treg dysfunction—a condition where regulatory T cells (Tregs) lose their ability to maintain immune tolerance and prevent autoimmune responses. When Tregs become functionally impaired, autoreactive immune cells proliferate unchecked, leading to dysregulated immune activation and the development of autoimmune diseases.
The primary bioactive compound in black seed oil, thymoquinone, demonstrates remarkable immunomodulatory effects that directly target the key pathways involved in Treg dysfunction. Clinical research shows that thymoquinone enhances Treg numbers and function by indirectly increasing FOXP3 expression—the master transcription factor critical for maintaining immune tolerance and suppressing autoreactive immune responses. This is particularly significant because stable FOXP3 expression is essential for Treg development, stability, and their ability to suppress inappropriate immune responses [39].
One of the most important mechanisms by which black seed oil supports immune regulation is through its restoration of interleukin-2 (IL-2) levels. IL-2 is a critical cytokine essential for Treg survival, development, and function, as it maintains FOXP3 expression and supports Treg identity. Chronic immune activation progressively depletes IL-2 availability, compromising Treg formation and maintenance. Thymoquinone helps restore these crucial IL-2 levels, particularly under autoimmune conditions where IL-2 may be dysregulated, thereby supporting Treg survival and growth [39].
Black seed oil also provides potent anti-inflammatory effects by significantly suppressing pro-inflammatory cytokines that drive Treg dysfunction. Research demonstrates that thymoquinone markedly reduces both IL-6 and TNF-α—two master inflammatory cytokines that interfere with FOXP3 expression and are key drivers of autoimmune disease development. IL-6 acts as a molecular switch that inhibits Treg development while promoting pro-inflammatory TH17 cells, and TNF-α destabilizes FOXP3, causing Tregs to lose their regulatory capacity. By suppressing these harmful cytokines, black seed oil helps restore the immune balance necessary for proper Treg function [39].
On a molecular level, thymoquinone's therapeutic effects are mediated through its inhibition of several major inflammatory signaling pathways, including NF-κB, MAPK, JAK-STAT, and PI3K/Akt cascades. These pathways are central to the inflammatory responses that drive autoimmune conditions. Additionally, thymoquinone demonstrates significant antioxidant properties, reducing oxidative stress that often exacerbates immune dysregulation and further impairs Treg function. Together, these mechanisms position thymoquinone as a powerful natural agent capable of simultaneously promoting immune tolerance via Tregs while dampening harmful pro-inflammatory responses that contribute to autoimmune disease development [39].
Ingredients
Nigella sativa (Black seed) (seed) oil
500 mg
Instructions
Instructions
Dosage
1 capsule twice daily with water after meals
Duration
Long-term support for Hashimoto's correction, with continuation guided by normalization of antibody titres
Warnings
If fluid retention persists, seek medical advice
Not for children under two years without medical advice
Do not take during pregnancy, lactation or if likely to become pregnant
Always read the label
Dietary supplements should not replace a balanced diet
If symptoms persist, worsen or change unexpectedly, consult your healthcare professional
Contraindications
Contraindications
This supplement may interact with the following categories of medications, as well as specific active ingredients.
• Clopidogrel
• Cyclosporine
• Medications changed by the liver - refer list
• Medications for diabetes
• Medications for high blood pressure
• Medications that decrease the immune system
• Medications that increase serotonin levels in the brain
• Medications that slow blood clotting
• Phenytoin
• Sedative medications
• Sildenafil
• Warfarin
• Diuretics
• Prednisolone
Further details are provided below.
Please note that medications may be sold under different brand names, so check the listed active ingredients against your medication packaging.
Major Interactions
Moderate Interactions
Clopidogrel
Clopidogrel can slow blood clotting. Black seed might also slow blood clotting. Taking black seed along with clopidogrel might increase the chances of bruising and bleeding.
Cyclosporine
• Restasis
• Used for: organ transplant, autoimmune conditions
Black seed might decrease levels of cyclosporine in the blood. This might reduce how well cyclosporine is able to work.
Medications changed by the liver
• Glipizide
• Phenytoin
• Losartan
Some medications are changed and broken down by the liver. Black seed might change how quickly the liver breaks down these medications. If you are taking medications metabolised by the liver, monitor for any changes in how your medication affects you.
Medications for diabetes
• Glyburide
• Glipizide
• Insulin
• Sitagliptin
• Empagliflozin
• Semaglutide
• Dapagliflozin
Black seed might lower blood sugar levels. Taking black seed along with diabetes medications might cause blood sugar to drop too low. Monitor your blood sugar closely.
Medications for high blood pressure
• Amlodipine
• Ramipril
• Perindopril
• Metoprolol
• Losartan
• Hydrochlorothiazide
Black seed might lower blood pressure. Taking black seed along with medications that lower blood pressure might cause blood pressure to go too low. Monitor your blood pressure closely.
Medications that decrease the immune system
• Cyclosporine
• Tacrolimus
• Mycophenolate
• Prednisone
• Methotrexate
• Azathioprine
Black seed can increase the activity of the immune system. Some medications, such as those used after a transplant, decrease the activity of the immune system. Taking black seed along with these medications might decrease the effects of these medications.
Medications that increase serotonin levels in the brain
• Serotonergic Drugs
Black seed might increase a brain chemical called serotonin. Some medications also have this effect. Taking black seed along with these medications might increase serotonin too much. This might cause serious side effects including heart problems, seizures, and vomiting.
Medications that slow blood clotting
• Heparin
• Rivaroxaban
• Apixaban
• Dabigatran
• Clopidogrel
Black seed might slow blood clotting. Taking black seed along with medications that also slow blood clotting might increase the risk of bruising and bleeding.
Phenytoin
Phenytoin is used to control some types of seizures. Black seed may increase or decrease levels of phenytoin in the blood. Taking black seed with phenytoin might reduce the effects or increase the risk of having side effects to phenytoin.
Sedative medications
• Diazepam
• Alprazolam
• Temazepam
• Zolpidem
• Zopiclone
• Promethazine
Black seed might cause sleepiness and slowed breathing. Some medications, called sedatives, can also cause sleepiness and slowed breathing. Taking black seed with sedative medications might cause breathing problems and/or too much sleepiness.
Sildenafil
Black seed might reduce levels of sildenafil in the body. Taking black seed with sildenafil might reduce the effects of sildenafil.
• Jantoven
• Used for: blood thinning, clot prevention
Warfarin is used to slow blood clotting. Black seed might increase the effects of warfarin, which could increase the risk of bleeding.
Diuretics
• Diuretic drugs
Black seed can decrease potassium levels. "Diuretics" can also decrease potassium levels. Taking black seed along with "Diuretics" might make potassium levels drop too low.
Minor Interactions
Prednisolone
Black seed might decrease levels of prednisolone in the blood. This might reduce the effects of prednisolone.
$15.98
Members Save
• Enhances regulatory T cell numbers and function by promoting FOXP3 expression, the master switch for immune tolerance
• Restores critical IL-2 levels essential for Treg survival and development under autoimmune conditions
• Significantly suppresses inflammatory cytokines IL-6 and TNF-α that drive autoimmune disease progression