what drugs cause elevated prolactin level
- Causes of Hyperprolactinemia. 1  Prolactinomas. 2  Medications (phenothiazines, metoclopramide, risperidone, selective serotonin reuptake inhibitors, estrogens, verapamil) 3  Stress. 4  Pregnancy. 5  Hypothyroidism. 6  Kidney disease. 7  Chest trauma.