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Scientific Name(s): Nigella sativa L. Family: Ranunculaceae (buttercups)

Common Name(s): Black seed , black cumin , charnushka , “black caraway” (not true caraway), baraka (the blessed seed), fitch (Biblical), “love in the mist”


Kalanji has been used for a number of illnesses and conditions including GI disorders, hypertension, diabetes, inflammation, cough, bronchitis, headache, eczema, fever, dizziness, and influenza. Studies have been conducted on its immunoprotective and anticancer effects; anti-inflammatory, analgesic, and antioxidant actions; and antidiabetic, antihypertensive, antimicrobial, and antiparasitic properties. More human studies are needed before kalanji can be recommended for any indication.


There are no clinical data upon which to base dosing recommendations.


Contraindications have not yet been identified.


Information regarding safety and efficacy in pregnancy and lactation is lacking.


None well documented.

Adverse Reactions

The seed and its constituents are characterized by a very low incidence of adverse reactions and toxicity. However, two cases of contact allergic dermatitis have been reported with topical use of the oil.


No major toxicities have been reported with kalanji.


Kalanji is an annual plant with terminal, grayish-blue flowers reaching between 30 and 60 cm in height. The toothed seed pod contains the distinctive tiny (1 to 2 mm long), black, 3-sided seeds that are the plant parts used for medicinal purposes. 1 , 2


Kalanji has been used for 3,000 years, with historical records of traditional medicinal use of the seed dating back 2,000 years. Its use began in the Middle East and spread throughout Europe, Africa, and India. Seeds were found in the tomb of King Tutankhamun. Ancient Egyptians believed that medicinal plants such as kalanji played a role in the afterlife. In the first century AD, the Greek physician Dioscorides documented that the seeds were taken for a variety of problems, including headache, toothache, nasal congestion, and intestinal worms. 1 There is a common Islamic belief that kalanji is a remedy for all ailments but that it cannot prevent aging or death. 3

In a survey of plants used in the traditional treatment of hypertension and diabetes in southeastern Morocco, N. sativa was found to be widely used. 4


N. sativa seeds contain fixed oils (36% to 38%), proteins, alkaloids, saponin (melanin), and essential oil (0.4% to 2.5%). 5 The fixed oil is composed mainly of unsaturated fatty acids (linoleic and oleic acids). 6 The major component of the essential oil is thymoquinone (28% to 57%). 3 , 7 Four alkaloids have been isolated: nigellicine and nigellidine (indazoles), and nigellimine and nigellimine N-oxide (isoquinolines). 3 Other constituents include palmitic, glutamic, ascorbic and stearic acids; arginine; methionine; lysine; glycine; leucine; and phytosterols. Crude fiber, calcium, iron, sodium, and potassium are also present. Nutritional composition of the seeds has been determined as 21% protein, 35% carbohydrate, and 36% fat. 1 , 2 , 3 , 8 , 9

Thymoquinone, dithymoquinone (nigellone), thymohydroquinone, and thymol are considered the main active constituents. 10

Uses and Pharmacology


At least 2 studies claim that the respiratory effects of kalanji make it beneficial for allergies, cough, bronchitis, emphysema, asthma, flu, and chest congestion. 2 In low concentrations, the constituent nigellone inhibits the release of histamine from mast cells. 11 The essential oil inhibited human neutrophil elastase activity in vitro and could be considered a natural antielastase agent for the treatment of injuries resulting from chronic obstructive pulmonary disease and emphysema. 12

Animal data

The volatile oil of kalanji, with thymoquinone removed, acts as a central respiratory stimulant in guinea pigs. 13

Clinical data

Nigellone suppressed symptoms in the majority of patients when given orally to those suffering from bronchial asthma. 14 In a clinical study, treatment with N. sativa oil in 152 patients with allergic diseases, including rhinitis and bronchial asthma, decreased the IgE and eosinophil count 15 and inhibited 5-lipoxygenase (the main enzyme in leukotriene biosynthesis), 16 supporting the use of N. sativa oil as adjuvant therapy for these conditions.


The fixed oil and thymoquinone have been shown to inhibit lipid peroxidation. 17 , 18 In addition, compounds isolated from N. sativa have shown free radical scavenging properties. 7 , 19 It appears the compounds in the oil act synergistically; therefore, it is important to use the whole oil or crude extract of the seeds in pharmacological studies. 3 , 10

Animal data

The antioxidant effects of N. sativa have been examined using different hepatic, kidney, and gastric toxicity models in vivo. N. sativa protected against CCl 4 -induced hepatotoxicity. 20 , 21 , 22 In gentamicin-induced toxicity, treatment with N. sativa oil produced dose-dependent amelioration of the biochemical and histological indices of nephrotoxicity. 23 , 24 Pretreatment with N. sativa in rats undergoing ethanol-induced gastric ulcer caused an increase in glutathione level, mucin content, and free acidity compared with controls. 25 Accordingly, a potential benefit of N. sativa seeds is the reduction of toxicity from anti-cancer drugs or from environmental or infectious factors because of its antioxidant properties. 10

Immune system

Kalanji enhances production of human interleukin and alters macrophages in vitro, suggesting an enhanced immune response. 26 Studies in the last decades suggest that ongoing use of N. sativa can enhance immune responses in humans. 10 The majority of subjects treated with N. sativa oil for 4 weeks showed a 53% increase in CD 4 to CD 8 T cells ratio and a 30% increase in natural killer cell function. 27

In contrast to this enhancing effect on T cell-mediated immune response, N. sativa constituents have shown a tendency to down regulate B cell-mediated immunity. 27 , 28 In one study, treatment with N. sativa oil induced a 2-fold decrease in antibody production in response to typhoid vaccination as compared with control rats. 29 Accordingly, it is likely that N. sativa may enhance cellular immunity but suppress humoral immunity. 10 However, further studies are required to validate this hypothesis.


In vitro and in vivo studies indicate that the oil and the active constituents of N. sativa seeds possess anti-tumor effects. 10 , 29 , 30 , 31 Thymoquinone protected against induced hepatotoxicity in mice in vivo 20 and in rat hepatocytes. 23 A mixture containing kalanji seeds was protective against diethylnitrosamine-mediated carcinogenic changes in rat liver. 32 The constituents thymoquinone and alpha-hederin have demonstrated cytotoxic actions in human cell lines as well. 33

Animal data

Kalanji has inhibited stomach tumors in mice. 34 Topical application of kalanji and saffron delayed and reduced papilloma formations in mice. 35

Clinical data

There are no clinical data regarding the use of kalanji for cancer.

Anti-inflammatory and analgesia

Traditional use of kalanji as a poultice of ground seeds for inflammatory ailments such as rheumatism, headache, and certain skin conditions is supported by modern studies. A fixed oil preparation demonstrated anti-eicosanoid and antioxidant activity, supporting the seeds' use for anti-inflammatory actions. 17 Thymoquinone is a potent inhibitor of thromboxane B 2 and leukotriene B 2 through the inhibition of cyclooxygenase and lipoxygenase, respectively. 17 , 36

Animal data

Research in mice using various models of analgesia concluded that N. sativa oil has strong antinociceptive actions. 37 , 38 , 39 , 40 In addition, it is likely that N. sativa polyphenols are particularly beneficial in alleviating pain of inflammatory origin. 39 In another study, the effects of thymoquinone on acetic acid-induced colitis in rats showed that pretreatment for 3 days led to complete protection against colitis with a comparable effect to sulfasalazine. 41 It has long been observed that N. sativa oil has anti-inflammatory and analgesic properties: systemic and local administration of black cumin seed essential oil resulted in potent analgesic and anti-inflammatory effects in mice. 40 In another study in rats with induced arthritis, oral thymoquinone suppressed the markers of arthritis both clinically and radiologically. 42

Clinical data

There are no clinical data regarding the use of kalanji for inflammatory or pain states.


In a recent survey of plants used in the traditional treatment of hypertension and diabetes in southeastern Morocco, N. sativa was the plant most frequently used by medical herbalists and others. 3

Animal data

Treatment of streptozotocin-induced diabetic rats with N. sativa caused a decrease in elevated serum glucose, an increase in serum insulin concentrations, and partial regeneration or proliferation of pancreatic beta cells, causing an increase in insulin secretion. 31 , 43 , 44 , 45 , 46 , 47 In another study, N. sativa treatment of diabetic rats increased the area of insulin immunoreactive beta-cells, suggesting that N. sativa might be used as a safe and effective therapy for diabetes. 48

Clinical data

There are no clinical data regarding the use of kalanji for diabetic ailments.


In a survey of plants used in the traditional treatment of hypertension and diabetes in southeastern Morocco, N. sativa was the plant most frequently used by medical herbalists and others. 3

Animal data

Kalanji may decrease arterial blood pressure in rats, suggesting its use as an antihypertensive agent. 49 Thymoquinone is effective in protecting rats against N-nitro-L-arginine methyl ester (L-NAME)-induced hypertension and renal damage, perhaps via antioxidant activity. 50 It reduced the increase in systolic blood pressure induced by L-NAME in a dose-dependent manner. 50

Clinical data

There are no clinical data regarding the use of kalanji for hypertension.


Kalanji traditionally has been used for conjunctivitis, 2 abscesses, parasites, and other infections. The essential oil of the seed has been reported as an effective antibacterial, antifungal, antiviral, and anthelmintic agent. 51 , 52 , 53 , 54 , 55

Animal data

Kalanji has eradicated staphylococcal infections in mice and has also displayed other gram-negative and gram-positive antibacterial actions, some of which are synergistic with other antibiotics. 52

An aqueous extract of N. sativa seeds inhibited the growth of Candida albicans when inoculated into mice. 54 In vitro, the extract and its active constituent, thymoquinone, inhibited 8 clinical isolates of common dermatophytes. 53

In vivo treatment with N. sativa oil induced a striking antiviral effect against murine cytomegalovirus infection. 55

Other studies have revealed N. sativa essential oil's antischistome effects 56 and antihelmintic activity against tapeworms, nematodes, and cestodes. 57 , 58

Clinical data

There are no clinical data regarding the use of kalanji as an antimicrobial or antiparasitic agent.

Miscellaneous uses

Kalanji eases gas and colic. 1 It has also been used for diarrhea, dysentery, constipation, and hemorrhoids. 2

Kalanji also plays a role in women's health, stimulating menstruation and increasing milk flow. 1 One study reports kalanji to have an anti-oxytocic potential in rat uterine smooth muscle, inhibiting spontaneous contractions. 59 Another report discusses the use of a seed extract to prevent pregnancy in rats 1 to 10 days postcoitum. 60

Kalanji has also been used as a flavoring or as a spice.


There are no clinical data for kalanji upon which to base dosing recommendations in humans.


Information regarding safety and efficacy in pregnancy and lactation is lacking.


None well documented.

Adverse Reactions

There are at least 2 case reports of allergic contact dermatitis from topical use of the oil. 61 , 62 The seed extract and its constituents are characterized by a very low degree of toxicity/adverse reactions. 3


While very few studies have addressed the possible toxicity of N. sativa seeds and its constituents, no major toxicities have been reported. 10 Further studies are required.


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4. Tahraoui A, El-Hilaly J, Israili ZH, Lyoussi B. Ethnopharmacological survey of plants used in the traditional treatment of hypertension and diabetes in south-eastern Morocco (Errachidia province). J Ethnopharmacol . 2007 ; 110 ( 1 ): 105-117 .
5. Lautenbacher LM. Schwarzkummelol. Dtsch Apoth Ztg . 1997 ; 137 : 68-69 .
6. Nickavar B, Mojab F, Javidnia K, Amoli MA. Chemical composition of the fixed and volatile oils of Nigella sativa L. from Iran. Z Naturforsch . 2003 ; 58 ( 9-10 ): 629-631 .
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11. Chakravarty N. Inhibition of histamine release from mast cells by nigellone. Ann Allergy . 1993 ; 70 : 237-242 .
12. Kacem R, Meraihi Z. Effects of essential oil extracted from Nigella sativa (L.) seeds and its main components on human neutrophil elastase activity. Yakugaku Zasshi . 2006 ; 126 ( 4 ): 301-305 .
13. el Tahir KE, Ashour MM, al-Harbi MM. The respiratory effects of the volatile oil of the black seed ( Nigella sativa ) in guinea-pigs: elucidation of the mechanism(s) of action. Gen Pharmacol . 1993 ; 24 ( 5 ): 1115-1122 .
14. El-Dakhakhny M. Studies on the Egyptian Nigella sativa L: IV Some pharmacological properties of the seeds' active principle in comparison to its dihydro compound and its polymer. Arzneimittelforschung . 1965 ; 15 (10): 1227-1229 .
15. Kalus U, Pruss A, Bystron J, et al. Effect of Nigella sativa (black seed) on subjective feeling in patients with allergic diseases. Phytother Res . 2003 ; 17 (10): 1209-1214 .
16. El Gazzar M, El Mezayen R, Nicolls MR, Marecki JC, Dreskin SC. Down regulation of leukotriene biosynthesis by thymoquinone attenuates airway inflammation in a mouse model of allergic asthma. Biochim Biophys Acta . 2006 ; 1760 ( 7 ): 1088-1095 .
17. Houghton PJ, Zarka R, de las Heras B, Hoult JR. Fixed oil of Nigella sativa and derived thymoquinone inhibit eicosanoid generation in leukocytes and membrane lipid peroxidation. Planta Med . 1995 ; 61 ( 1 ): 33-36 .
18. Hosseinzadeh H, Parvardeh S, Asl MN, Sadeghnia HR, Ziaee T. Effect of thymoquinone and Nigella sativa seeds oil on lipid peroxidation level during global cerebral ischemia-reperfusion injury in rat hippocampus. Phytomedicine . 2007 ; 14 ( 9 ): 621-627 .
19. Badary OA, Taha RA, Gamal El-Din AM, Abdel-Wahab MH. Thymoquinone is a potent superoxide anion scavenger. Drug Chem Toxicol . 2003 ; 26 ( 2 ): 87-98 .
20. Nagi M, et al. Thymoquinone protects against carbon tetrachloride hepatotoxicity in mice via an antioxidant mechanism. Biochem Mol Biol Int . 1999 ; 47 ( 1 ): 153-159 .
21. Al-Ghamdi MS. Protective effect of Nigella sativa seeds against carbon tetrachloride-induced liver damage. Am J Chin Med . 2003 ; 31 ( 5 ): 721-728 .
22. Kanter M, Coskun O, Budancamanak M. Hepatoprotective effects of Nigella sativa L and Urtica dioica L on lipid peroxidation, antioxidant enzyme systems and liver enzymes in carbon tetrachloride-treated rats. World J Gastroenterol . 2005 ; 11 ( 42 ): 6684-6688 .
23. Daba M, Abdel-Rahman MS. Hepatoprotective activity of thymoquinone in isolated rat hepatocytes. Toxicol Lett . 1998 ; 95 ( 1 ): 23-29 .
24. Ali BH. The effect of Nigella sativa oil on gentamicin nephrotoxicity in rats. Am J Chin Med . 2004 ; 32 ( 1 ): 49-55 .
25. El-Dakhakhny M, Barakat M, El-Halim MA, Aly SM. Effects of Nigella sativa oil on gastric secretion and ethanol induced ulcer in rats. J Ethnopharmacol . 2000 ; 72 (1–2): 299-304 .
26. Haq A, Abdullatif M, Lobo PI, Khabar KS, Sheth KV, al-Sedairy ST. Nigella sativa : effect on human lymphocytes and polymorphonuclear leukocyte phagocytic activity. Immunopharmacology . 1995 ; 30 ( 2 ): 147-155 .
27. El-Kadi A, et al. 1st International Conference on Scientific Miracles of Quran and Sunnah, Islamabad, Pakistan.
28. Swamy SM, Tan BK. Cytotoxic and immunopotentiating effects of ethanolic extract of Nigella sativa L. seeds. J Ethnopharmacol . 2000 ; 70 : 1-7 .
29. Islam SN, Begum P, Ahsan T, Huque S, Ahsan M. Immunosuppressive and cytotoxic properties of Nigella sativa . Phytother Res . 2004 ; 18 ( 5 ): 395-398 .
30. Salomi NJ, Nair SC, Jayawardhanan KK, Varghese CD, Panikkar KR. Antitumour principles from Nigella sativa seeds. Cancer Lett . 1992 ; 63 ( 1 ): 41-46 .
31. al-Awadi F, Gumaa KA. Studies on the activity of individual plants of an antidiabetic plant mixture. Acta Diabetol Lat . 1987 ; 24 ( 1 ): 37-41 .
32. Iddamaldeniya SS, Thabrew MI, Wickramasinghe SM, Ratnatunge N, Thammitiyagodage MG. A long-term investigation of the anti-hepatocarcinogenic potential of an indigenous medicine comprised of Nigella sativa , Hemidesmus indicus and Smilax glabra . J Carcinog . 2006 ; 5 : 11-16 .
33. Worthen D, Ghosheh OA, Crooks PA. The in vitro anti-tumor activity of some crude and purified components of blackseed, Nigella sativa L. Anticancer Res . 1998 ; 18 ( 3A ): 1527-1532 .
34. Badary O, Al-Shabanah OA, Nagi MN, Al-Rikabi AC, Elmazar MM. Inhibition of benzo(a)pyrene-induced forestomach carcinogenesis in mice by thymoquinone. Eur J Cancer Prev . 1999 ; 8 ( 5 ): 435-440 .
35. Salomi MJ, Nair SC, Panikkar KR. Inhibitory effects of Nigella sativa and saffron ( Crocus sativus ) on chemical carcinogenesis in mice. Nutr Cancer . 1991 ; 16 ( 1 ): 67-72 .
36. El-Dakhakhny M, Madi NJ, Lembert N, Ammon HP. Nigella sativa oil, nigellone and derived thymoquinone inhibit synthesis of 5–lipoxygenase products in polymorphonuclear leukocytes in rats. J Ethnopharmacol . 2002 ; 81 (2): 161-164 .
37. Khanna T, et al. CNS and analgesic studies on Nigella sativa . Fitoterapia . 1993 ; 5 : 407-410 .
38. Abdel-Fattah M, Matsumoto K, Watanabe H. Antinociceptive effects of Nigella sativa oil and its major components in mice. Eur J Pharmacol . 2000 ; 400 : 89-97 .
39. Ghannadi A, Hajhashemi V, Jafarabadi H. An investigation of the analgesic and anti-inflammatoty effects of Nigella sativa seed polyphenols. J Med Food . 2005 ; 8 ( 4 ): 488-493 .
40. Hajhashemi V, Ghannadi A, Jafarabadi H. Black cumin seed essential oil, as a potent analgesic and anti-inflammatory drug. Phytother Res . 2004 ; 18 ( 5 ): 195–199 .
41. Mahgoub AA. Thymoquinone protects against experimental colitis in rats. Toxicol Lett . 2003 ; 143 : 133-143 .
42. Tekeoglu I, Dogan A, Demiralp L. Effects of thymoquinone (volatile oil of black cumin) on rheumatoid arthritis in rat models. Phytother Res . 2006 ; 20 : 869-871 .
43. al-Awadi F, Fatania H, Shamte U. The effect of a plants mixture extract on liver gluconeogenesis in streptozotocin induced diabetic rats. Diabetes Res . 1991 ; 18 ( 4 ): 163-168 .
44. Kanter M, Meral I, Yener Z, Ozbek H, Demir H. Partial regeneration/proliferation of the beta-cells in the islets of Langerhans by Nigella sativa L. in streptozotocin-induced diabetic rats. Tokohu J Exp Med . 2003 ; 201 ( 4 ): 213-219 .
45. Kanter M, Coskun O, Korkmaz A, Oter S. Effects of Nigella sativa on oxidative stress and beta-cell damage in streptozotocin-induced diabetic rats. Anat Rec A Discov Mol Cell Evol Biol . 2004 ; 279 ( 1 ): 685-691 .
46. Rchid H, Chevassus H, Nmila R, et al. Nigella sativa seed extracts enhance glucose-induced insulin release form rat-isolated Langerhans islets. Fundam Clin Pharmacol . 2004 ; 18 ( 5 ): 525-529 .
47. Hawsawi ZA, Ali BA, Bamosa AO. Effect of Nigella sativa (black seed) and thymoquinone on blood glucose in albino rats. Ann Saudi Med . 2001 ; 21 ( 3-4 ): 242-244 .
48. Altan MF, Kanter M, Donmez S, Kartal ME, Buyukbas S. Combination therapy of Nigella sativa and human parathyroid hormone on bone mass, biochemical behaviour and structure in streptozotocin-induced diabetic rats. Acta Histochem . 2007 ; 109 ( 4 ): 304-314 .
49. el Tahir KE, Ashour MM, al-Harbi MM. The cardiovascular actions of the volatile oil of the black seed ( Nigella sativa ) in rats: elucidation of the mechanism of action. Gen Pharmacol . 1993 ; 24 ( 5 ): 1123-1131 .
50. Khattab MM, Nagi MN. Thymoquinone supplementation attenuates hypertension and renal damage in nitric oxide deficient hypertensive rats. Phytother Res . 2007 ; 21 ( 5 ): 410-414 .
51. Agarwal R, Kharya MD, Shrivastava R. Antimicrobial & anthelmintic activities of the essential oil of Nigella sativa Linn. Indian J Exp Biol . 1979 ; 17 ( 11 ): 1264-1265 .
52. Hanafy M, Hatem ME. Studies on the antimicrobial activity of Nigella sativa seed (black cumin). J Ethnopharmacol . 1991 ; 34 ( 2-3 ): 275-278 .
53. Aljabre SH, Randhawa MA, Akhtar N, Alakloby OM, Alqurashi AM, Aldossary A. Antidermatophyte activity of ether extract of Nigella sativa and its active principle, thymoquinone. J Ethnopharmacol . 2005 ; 101 ( 1-3 ): 116-119 .
54. Khan MA, Ashfaq MK, Zuberi HS, Mahmood MS, Gilani AH. The in vivo antifungal activity of aqueous extract from Nigella sativa seeds. Phytother Res . 2003 ; 17 ( 2 ): 183-186 .
55. Salem ML, Hossain MS. Protective effect of black seed oil from Nigella sativa against murine cytomegalovirus infection. Int J Immunopharmacol . 2000 ; 22 ( 9 ): 729-740 .
56. Mahmoud MR, El-Abhar HS, Saleh S. The effect of Nigella sativa oil against the liver damage induced by Schistosoma mansoni infection in mice. J Ethnopharmacol . 2002 ; 79 ( 1 ): 1-11 .
57. Agarwal R, Kharya MD, Shrivastava R. Antimicrobial & anthelmintic activities of the essential oil of Nigella sativa Linn. Indian J Exp Biol . 1979 ; 17 ( 11 ): 1264-1265 .
58. Akhter MS, Riffat S. Field trial of Saussurea lappa roots against nematodes and Nigella sativa seed against cestodes in children. J Pak Med Assoc . 1991 ; 41 ( 8 ): 185-187 .
59. Aqel M, Shaheen R. Effects of the volatile oil of Nigella sativa seeds on the uterine smooth muscle of rat and guinea pig. J Ethnopharmacol . 1996 ; 52 ( 1 ): 23-26 .
60. Keshri G, Singh MM, Lakshmi V, Kamboj VP. Post-coital contraceptive efficacy of the seeds of Nigella sativa in rats. Indian J Physiol Pharmacol . 1995 ; 39 ( 1 ): 59-62 .
61. Zedlitz S, Kaufmann R, Boehncke WH. Allergic contact dermatitis from black cumin ( Nigella sativa ) oil-containing ointment. Contact Dermatitis . 2002 ; 46 ( 8 ): 188 .
62. Steinmann A, Schätzle M, Agathos M, Breit R. Allergic contact dermatitis from black cumin ( Nigella sativa ) oil after topical use. Contact Dermatitis . 1997 ; 36 ( 5 ): 268-269 .

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