Evening Primrose oil (EPO) is often recommended for women who are trying to conceive a boy. The evening primrose is a flowering plant that grows mainly in the United States. It can also be found growing in Europe and other countries. The yellow flower blooms in the evening, hence the name.

Evening primrose oil contains gamma-linolenic acid (GLA), an Omega-6 essential fatty acid. GLA is converted by the body into prostoglandin E1, which is a hormone-like substance that reduces inflammation. It also thins cervical mucus and helps the body produce more high-quality “egg-white” mucus. This mucus is more favorable to male sperm because it is easier for them to swim to the egg.

The oil is extracted from Evening Primrose seeds and put into capsules for easy consumption. Dosage for sex selection is usually 1500 to 3000mg per day. Most women suffer no side effects when they take the oil, but some experience mild stomach upset or a headache. However, reports show that it can cause uterine contractions or prevent implantation, so it is often recommended that it be taken only from menstruation through ovulation each cycle.

The effectiveness of evening primrose oil in gender selection has not been studied. Studies have shown that it helps with breast pain during the menstrual cycle, eczema and rheumatoid arthritis. However, there have not been any large, well-designed studies performed for any of these conditions. As with any supplement, you should make your doctor aware that you are using it so that medication interactions can be avoided.