Description ImpactRx helps drug companies measure the impact their sales and marketing strategies have on prescribing behavior. Using personal digital assistants, the company tracks prescriptions from thousands of physicians and allows clients to measure the effectiveness of its varying marketing programs. The company offers a variety of products each targeting specific marketing disciplines and segments such as brand management and market research, sales management, managed care, and oncology sales and marketing. Founded in 2000, the company is funded by Mediphase Venture Partners, Oxford Bioscience Partners, and Merck Capital Ventures.