Ketotifen, a mast cell blocker improves sperm motility in asthenospermic infertile men - sperm blockers

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Possible Male Birth Control Blocks Sperm | Live Science sperm blockers


Sperm Wars is a primarily nonfiction book by evolutionary biologist Robin Baker. Originally Baker calls these fertile sperm "egg-getters", and claims that the rest of the sperm in the ejaculate are infertile "kamikaze sperm" or "blockers", whose.

Keeping sperm from being ejaculated may provide the key to creating a birth control drug for men, according to a new mouse study.

Fertil Steril. Sep;62(3) The effect of calcium ion channel blockers on sperm fertilization potential. Benoff S(1), Cooper GW, Hurley I, Mandel FS.