Black seed oil has been investigated in male reproductive-health research. One controlled trial reported improvements in several semen-quality measurements.
Study design
Randomised, double-blind, placebo-controlled trial; 68 infertile men; oral Nigella oil versus liquid paraffin; two months.
Reported findings
A 2014 randomised trial included 68 infertile men with abnormal semen parameters. Participants received Nigella oil or placebo for two months. The authors reported improvements in several semen measures in the oil group.
Interpreting the result
The primary findings concern semen parameters, not demonstrated pregnancy or live-birth benefits. The study cannot establish effects across all causes of infertility or long-term outcomes. A report of no observed adverse effects in a small trial is not universal safety evidence.
Why this study is useful
The outcome was semen quality over two months. That makes it relevant to a specific laboratory question, while pregnancy and live-birth outcomes remain separate. The study does not predict an individual couple’s fertility result.
Source
Kolahdooz M, Nasri S, Modarres SZ, Kianbakht S, Huseini HF. Effects of Nigella sativa L. seed oil on abnormal semen quality in infertile men: a randomized, double-blind, placebo-controlled clinical trial. (2014).
Read the published study · Publisher / DOI
Discover Antidote black seed oil
Looking for Ethiopian black seed oil? Explore Antidote’s cold-pressed oil in a 50 mL glass bottle. View the product, check the details and add it to your basket in one place.
Shop Antidote Ethiopian Black Seed Oil →
Explore the black seed oil guide
More about black seed oil
Nigella oil and blood pressure: the healthy-volunteer evidence