Its great for male infertility and can be found at health food stores everywhere. 3-4 grams is generally the dosage used daily to enhance male fertility. Diet plays the most important role in healthy pregnancies. If in case the sperm cell composition is altered and it lacks the essential nutrients needed to fertilize the female egg cell, the sperm cell is considered as immature. Male fertility increases if you include vitamin c and e in your diet along with zinc and selenium.