Vitamin A promotes egg quality through its role in ovarian hormone synthesis and prevents malformations^4,5. It is involved in cell division from the moment of fertilization, and thus promotes embryonic development. Finally, it supports placenta implantation and formation⁸.

All B vitamins are essential during the preconception period. Folic acid (B9) helps promote conception and fetal health in women who are vegetarians or who eat little animal products (meat, fish, eggs, dairy products). Combined with prenatal vitamins such as B6 and B12, folic acid intake from the preconception period reduces the risk of congenital diseases, including neurological abnormalities. Studies have shown that giving vitamin B6 to women who have difficulty conceiving increases fertility¹. Vitamin B6 and B12 levels naturally decrease during pregnancy. Also, the absence of a nutritional intake rich in vitamins B6 and B12 increases the risk of anemia and pre-eclampsia in the mother, and skeletal and neuromotor abnormalities in the child.

Vitamin D3 is recognized for bone growth and maintaining a balanced immune system. Vitamin D has been shown to have beneficial effects on female reproduction, including the results of in vitro fertilization (IVF), polycystic ovary syndrome (PCOS) and endometriosis^1,7. In addition, vitamin D may influence the synthesis of sex hormones (estradiol and progesterone) in healthy women. Clinical observations indicate that women deficient in vitamin D during pregnancy are more likely to develop gestational diabetes, pre-eclampsia or bacterial vaginosis, and are more likely to give birth to a low-birth-weight baby⁸. Vitamin D supplementation is therefore indicated as early as the preconventional period.

The molecules it contains have numerous health benefits, including strengthening and nourishing the intestinal flora, stimulating the immune system, slowing aging and preventing viral and bacterial infections. Reishi also has anti-inflammatory and antioxydant properties⁹. Its immunomodulating properties are of interest to women whose infertility may be linked to an immune system anomaly (recurrent miscarriage, implantation failure and endometriosis).

Essential mineral for uterine function. Its main property is its action on the nervous system, but it has many other benefits, notably for muscles, the heart, bones and the immune system. It is particularly recommended for people suffering from stress or magnesium deficiency¹⁰. Magnesium also helps prevent cardiovascular disease, migraines, diabetes, severe asthma, difficulty sleeping, premenstrual pain and preeclampsia^11-13.

Mineral requirements increase during pregnancy. Vitamin B6 improves iron absorption, thus preventing maternal anemia and its consequences for the fetus. Pregnant women need more iron due to increased blood volume and the fact that during the third trimester of pregnancy, the fetus stores the iron reserves it will need for the first six months of life. This will have an effect on the normal development of the infant's brain. Zinc, copper and iron share the same role on the infant's brain, and thanks to their antioxidant properties, zinc and copper stimulate the immune system¹⁴. Zinc is an essential trace element involved in multiple biological functions. It generally acts as an antioxidant. Zinc is the nutrient most commonly studied in the context of male and female fertility. It is an essential component of genetic material, and zinc deficiency can lead to chromosomal changes, reduced fertility and an increased risk of spontaneous abortion.