The science
What the trial actually measured: sleep, not buzz.
The honest evidence on Nigella sativa and daily energy runs through sleep quality and the cortisol/stress axis — the upstream systems that determine how you actually feel at 2pm.
A 2024 randomized, double-blind, placebo-controlled actigraphy study (n=70)
Tested 200 mg of a standardized black seed oil extract at 5% thymoquinone — a concentrated extract, not a cold-pressed oil like habb's — taken 30 minutes before bedtime. Over 7 days, the active group showed a 75.3% improvement in restorative sleep (RSQ-W) score versus 4.3% in placebo (p<0.001). Sleep efficiency rose 7.8%. Total sleep time rose 19.1%. Sleep onset latency fell 35.4%. Included here to characterize the active-compound research base, not as evidence of habb's specific effect. Only mild aftertaste was reported as an adverse effect.1
A 90-day companion trial on the same extract
Found significantly reduced salivary cortisol (effect size 0.72, p=0.013) and significantly higher melatonin in the active group versus placebo.2
habb supports restful sleep and a healthy stress response — which is how Nigella sativa supports normal daytime energy.
Why one ingredient, not twelve
The studies that worked used measured oil. So do we.
Most cold-pressed oils on the morning shelf are not measured. We measure ours and print the number on the card. The actigraphy trial that found a sleep-quality effect used oil at a specific active-compound percentage, not a guess.
Every habb batch publishes three data points:
Lab-verified. Method-disclosed. We state the method because without the method the number is marketing.
Linoleic 57–61%, oleic 20–21%, palmitic 12–13%.
For oxidation and contamination safety.
Sourcing: Ethiopian seeds, cold-pressed in California, one ingredient. The full how-it’s-made math lives on how it’s made.
Cold-pressed in California from single-origin Ethiopian seeds.
How to use
One teaspoon, every morning, with the ceramic spoon.
Some customers prefer to take their habb in the evening because of the sleep research. Morning is still our default recommendation — it’s the ritual that sticks, and the clinical effects compound daily rather than per-dose. Pick the time you’ll actually keep.
What real customers are saying
Questions