Black cumin is often labeled under various names, such as Black Cumin Oil, Nigella Sativa, Habbatus Sauda, or simply Black Seed. All of these terms refer to the same substance.

Studies suggest that the key bioactive compound responsible for its efficacy, therefore, it depends more on the content of crude black cumin and the bioactive compound thymoquinone, rather than the specific form. It's important to choose a product with labeled thymoquinone content.

Sabinsa’s NIGELLIN® is standardized to contain thymoquinone, extracted using Supercritical Fluid Extraction (SCFE) to preserve the thymoquinone quality. SCFE is a method that uses supercritical CO₂ to extract bioactive compounds without high temperatures or solvents, maintaining higher purity and potency compared to coldpressed oil, which may lose some beneficial compounds during processing.