Black Cumin Seed Oil
Black cumin seed oil, Nigella sativa L., markedly boosts semen quality, motility and volume with no adverse effects. In the test group, men receiving 5ml of the oil daily for two months had significantly higher sperm count, better motility and morphology and improved pH levels compared to a placebo group.
-Beheshti U. Of Med. Sci., Tehran, Iran. Phytomedicine 2014 May 15