Kalaunji (kalonji) seeds—Nigella sativa, also called black seed or black cumin—have documented anti-inflammatory effects, supported by traditional use, animal studies, and some human trials. The main active compound is thymoquinone (TQ) in the seed oil, along with other phenolics and volatiles.

They have been used in Unani, Ayurvedic, and Middle Eastern medicine for rheumatism, joint pain, skin inflammation, and related conditions. Modern research shows they can modulate inflammatory pathways.

How they work

Thymoquinone and related compounds:

• Inhibit cyclooxygenase (COX) and lipoxygenase (LOX), reducing prostaglandins and leukotrienes.
• Lower pro-inflammatory cytokines such as TNF-α, IL-1β, and IL-6.
• Suppress NF-κB signaling.
• Reduce C-reactive protein (CRP) and oxidative stress markers (e.g., MDA) while raising antioxidant capacity (TAC, SOD).

These effects appear in models of arthritis, colitis, paw edema, and respiratory inflammation.

Human evidence

Meta-analyses of randomized trials report reductions in CRP, TNF-α, and MDA with N. sativa supplementation, plus improvements in antioxidant markers.

Small studies in rheumatoid arthritis (e.g., 500 mg oil twice daily) have shown improved disease activity scores, fewer swollen joints, and lower inflammatory markers after 4–8 weeks. Results for osteoarthritis pain are mixed. It is generally viewed as a possible adjunct, not a standalone treatment. Larger, longer trials are still needed.

Common forms and typical study doses

• Whole seeds (1–2 g/day, often roasted or powdered).
• Cold-pressed oil (500 mg–1 g twice daily in capsules).
• Topical oil or paste for joints/skin.

Quality varies; look for standardized oil or reputable sources. Seeds can be used in food (naan, curries, pickles).

Cautions

Generally well-tolerated at culinary or modest supplemental doses. Possible issues include stomach upset, allergic reactions, or interactions with blood-pressure, diabetes, or anticoagulant drugs. High doses or use in pregnancy should be discussed with a clinician. It is not a substitute for prescribed anti-inflammatory treatment.

Overall, kalaunji seeds have a plausible scientific basis as a traditional anti-inflammatory agent with supporting (though not definitive) clinical data. Consult a doctor before using them therapeutically, especially if you have an existing condition or take medications.