Responses from pharmaceutical companies to doctors' requests for more drug information in Pakistan: postal survey.

What health professionals know about medicines resembles the information provided in the advertisements of pharmaceutical companies rather than the scientific literature. Drug companies spend 15-20% of their income on promotion. They are responsible for providing adequate information about drugs, and the wording and illustrations should be consistent with the scientific data sheet for the drug concerned. Inadequate and biased information has been reported in developing countries and this results in incorrect use of drugs. 5 We assessed how seriously pharmaceutical companies take their responsibility to provide information on request by recording the promptness, nature, and adequacy of their replies to doctors.