You can find more information on domperidone in The Newman-Goldfarb protocols.
Please see:
Domperidone was initially prescribed for people with upper gastrointestinal problems. It was discovered to have a side effect that results in prolactin levels that could in turn cause lactation. A similar drug called Reglan is used in the U.S. to induce lactation, however, it is not recommended for long-term use in lactating women.
Domperidone general information
This page contains product information about the drug domperidone, including dosage recommendations, possible side effects and FDA regulations, and what Dr. Thomas Hale says about domperidone in his book "Medications and Mother’s Milk, 2002", Pharmasoft Publishing, p. 230
Dosage instructions for domperidone.