Supplemental Jarrah, or estradiol valerate, can be supplemented if you are tested for estrogen deficiency in preparation for pregnancy, but should not be used if it is normal. Estradiol valerate, is a drug used to supplement estrogen. Pregnant women need to pay attention to their estrogen secretion when preparing for pregnancy. Low estrogen level will lead to abnormal ovulation, which directly affects the success rate of pregnancy. Therefore, if you have low estrogen during the preparation for pregnancy, you need to use estradiol valerate to supplement estrogen, so as not to affect the follicle development and the growth of the uterine lining, resulting in failure to get pregnant. For normal people, it is not necessary to use Estradiol Valerate, as high estrogen in normal people may affect the function of ovaries and easily cause endometrial lesions, which may affect the implantation of fertilized eggs, so Estradiol Valerate does not need to be supplemented if the estrogen is normal.