In China, a number of fertility formulas can be purchased off the shelf in public pharmacies, and for uncomplicated cases, this is often adequate. However most men and women in the Orient are treated for persistent infertility by obtaining prescriptions from a doctor who is expert in Chinese herbs. In the U.S., it is uncommon to find fertility-promoting formulas in stores or other outlets; rather, they are prescribed by acupuncturists, naturopaths, or medical doctors who are familiar with Chinese herbal medicine. Depending on the circumstances, one may be asked to ingest herbs in the form of pills, tablets, granules, or decoctions (teas). Some of the treatment plans involve using a single herb combination regularly, while others suggest using two, or even three, different formulas at different times of the menstrual cycle. All of these means can be effective, so long as the correct formula and correct dosage are used for an adequate period of time.