The medically important vitamin D is obtained from food but can also be produced in the deep layers of skin in reaction to direct sunlight. The two primary forms of vitamin D, D2 and D3, are prohormones and regulate the balance of calcium and phosphate. The main sites of action are the intestines, bones, and kidneys.
In the ovaries, vitamin D increases the production of sex steroids, progesterone and estrogen, required for maintenance of normal menstrual cycle. Vitamin D also is needed for the production of hormones that support implantation. Women with higher blood levels of vitamin D have better reproductive capacity. Moreover, low blood levels of vitamin D are found to hinder in vitro fertilization, so women undergoing assisted reproduction should take vitamin D supplements. The recommended daily dose of vitamin D during pre-conception and pregnancy is 20 mcg or 4,000 IU.
Fruitful for Her contains vitamin D to increase your chances of getting pregnant.