Black Seed Oil
Nigella sativa
What the evidence shows
A traditional remedy with a handful of small trials showing testosterone and sperm-parameter improvements, most in men with baseline metabolic issues (obesity, subfertility) rather than healthy men. Promising but thin evidence base compared to better-studied options like ashwagandha or tongkat ali.
How it's thought to work
Contains thymoquinone, an antioxidant compound proposed to reduce oxidative stress in testicular tissue and support metabolic parameters relevant to steroidogenesis.
Typical Dosage
500mg–1g/day of standardized seed oil.
Safety Notes
Generally well-tolerated. Can lower blood pressure and blood sugar — caution if on relevant medications.
Want the full clinical breakdown?
Black seed oil (thymoquinone) improves testosterone in RCTs — with one trial showing 27% testosterone increase at 2.5ml/day in infertile men. Here's what works and what to look for.
Read the full evidence reviewConsidering adding Black Seed Oil to your routine?
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