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This requires understanding proper concentrations, pH levels, and stability considerations
Change history 26 August 2025 A Correction to this paper has been published: 21 January 2026 A Correction to this paper has been published: References Maremonti, F., Meyer, C
100,101 In a randomized placebo-controlled trial that included 72 healthy subjects with self-reported non-refreshing sleep, 200 mg per day of black cumin seed oil standardized to contain 5% thymoquinone (an active compound in black cumin essential oil) for 90 days improved sleep quality and stress levels as measured by questionnaires
Potency decreases steadily after the first few weeks, and bacterial contamination risk rises even with bacteriostatic water
Ensures higher levels of B12 in the bloodstream compared to oral intake
