There are many drugs that affect prolactin, including antipsychotics and all antidepressants, dopamine receptor antagonists, antihypertensives and antiarrhythmics, opioids, and estrogen and birth control pills. Other drugs have a certain effect on the level of prolactin, anti-psychotic drugs including chlorpromazine, fluphenazine, haloperidol, etc. can elevate prolactin; dopamine agonists, such as bromocriptine can clinically inhibit the secretion of prolactin, is to inhibit the secretion of prolactin the most effective drugs, especially for the preparation for the period of pregnancy and the period of pregnancy, the patient with high prolactin should be preferred bromocriptine. Carmeglumine and Nogonin can also inhibit the secretion of prolactin. There are also some Chinese medicinal preparations such as Er Chen Tang, Paeonia lactiflora and Licorice Tang, Angelica sinensis and Paeonia lactiflora Macrocephala Tang, and Liver Cleanser that can inhibit the secretion of breast milk. There are also medications such as cyproheptadine and vitamin B6 that can inhibit lactogen secretion.