Pharmaceutical Regulation Conflict of Interest Act This bill amends the Ethics in Government Act of 1978 to prohibit a pharmaceutical regulator from using his or her position as regulator to influence any matter that provides a direct or substantial pecuniary benefit to a former employer or client. The position of pharmaceutical regulator refers to any officer or employee occupying a supervisory position within the Drug Enforcement Administration or the Food and Drug Administration. The bill also prohibits such a pharmaceutical regulator from participating in matters involving an individual or entity with whom the pharmaceutical regulator is negotiating future employment. The bill expands restrictions on lobbying by such pharmaceutical regulators following separation from employment with a pharmaceutical regulatory agency.