Although the outcome for any given individual cannot be predicted, the clinical studies conducted at TCM WINDOW indicate that about 70% of all cases of infertility treated by Chinese herbs resulted in pregnancy or restored fertility. Depending on the particular study and the types of infertility treated, success rates ranged from about 50% up to more than 90%. Included in these statistics are cases of infertility involving obstruction of the fallopian tubes, menorrhea, absent ovulation, endometriosis, uterine fibroids, low sperm count, nonliquification of semen, and other causes. In China, due to the greater experience with using herbs, the ability to directly integrate traditional and modern methods of therapy, and the willingness of individuals to consume relatively large doses of herbs, the success rates are probably somewhat higher than can be achieved in the west. at the present time. 

DURATION OF TREATMENT TO ATTAIN FERTILITY
In our clinical studies, daily or periodic use of herbs usually resulted in restored fertility within three to six months. We Chinese doctors feel that if pregnancy is not achieved within about eight to nine months, then it is unlikely that the treatment will be successful with continued attempts. In Japan, where doctors give lower dosages of herbs and are restricted to using a smaller range of herbs, treatment time is usually longer: from six to fifteen months. In the U.S., nearly the full range of Chinese herb materials are accessible, but the dosage to be used is usually lower than in China; as a result, it is estimated that pregnancy can be achieved within six to twelve months. It must be remembered, however, that approximately one-third of infertility cases may fail to respond to all reasonable attempts. One advantage of the Chinese herbal approach is that even if pregnancy does not occur, benefits to health can be attained because the herbs address imbalances that affect other aspects of health besides infertility.