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Gender Selection Supplements for Conceiving a Boy

Evening Primrose Oil

Evening Primrose Oil (EPO)

Improves cervical mucus and alleviates PMS symptoms

Widely recommended for fertility enhancement when trying to conceive, Evening Primrose Oil causes more fertile quality cervical mucus to be produced, and also relieves symptoms of premenstrual syndrome.
  • Gender selection theory: Under conditions of optimum fertility, the theoretically faster Y-sperm should win the race to the egg, favoring conception of a boy.
  • Use: Take 1500mg to 3000mg per day, starting from the first day of your period through ovulation. It may take a month or two to see results.
  • When not to use: You should not take EPO after ovulation during the cycle you're trying to conceive, because it may cause uterine contractions preventing a pregnancy from implanting in the uterus.
  • More Info: Evening Primrose Oil at
Mucinex (Guaifenesin)
Mucinex Extended-Release Guaifenesin Tablets
Fast-Acting Guaifenesin Tablets
Robitussin for Fertility
Instead of Robitussin for Fertility

Guaifenesin Tablets (Instead of Robitussin)

The cure for thick cervical mucus

Guaifenesin is found in many cough and cold remedies as an expectorant (which is a delicate way of saying it loosens mucus and phlegm so you can cough it out). How can it aid fertility? It can aid fertility because it affects the cervical mucus in the vagina, making it thinner and more watery. If the cervical mucus is too thick, sperm become trapped in it as they try to reach the egg. Thinner cervical mucus allows the sperm to slip through the fluid rather than getting stuck in it.
  • Guaifenesin tablets are now available over the counter, an inexpensive alternative to buying icky cough syrup.
  • Robitussin is often suggested, but please read why you should use Guaifenesin tablets instead of Robitussin for fertility.

    Important: If you do buy guaifenesin in a cough syrup or cold remedy, check the label to make sure guaifenesin is only active ingredient, because other active ingredients may not be safe when trying to conceive.

  • Gender selection theory: Good quality cervical mucus improves the chances for all sperm, but if Y-sperm swim faster, conception of a boy is more likely.
  • Use: Take 200mg with a full glass of water, three times per day. If cervical mucus does not become thinner, increase dosage to maximum allowed on the label. Take during the 5 days before ovulation, and the day of ovulation.
  • When not to use: There is no advantage in taking guaifenesin during the rest of your cycle, because the quality of your cervical mucus is only important at the time of intercourse. In fact, your cervical mucus is supposed to be thick and sticky during the rest of your cycle (when you're not ovulating), as a defense against any organisms that may find their way into the vagina.
  • Check with your doctor before using.