Drug information from the website is an important source for health care professionals, related business and the great public to access. Optimum drug treatments need the collaboration of suitable prescriptions written by physicians and pharmaceutical care done by pharmacists. Detailed and accurate drug information systems together with correct interpretation are ways needed to reach the goals of therapy. In addition to drug information, this article also provides website address that includes information of Chinese medicine, herbals, supplements, pharmacovigilance, clinical practice guidelines, laws and medical calculators. Drug information sources from the website may be good or improper, render the readers difficult to interpret. The websites created and maintained by the governments should have high priorities to be cited. Other websites to be cited are those with detailed and accurate information, updated periodically, free of charge.