Objective: To analyse the degree of trust placed in sources of medical information by practising doctors-therapists. Methods: We questioned 144 doctors or therapists from various cities in Central Russia. Doctors completed a questionnaire containing demographic data, information sources and how much trust they placed in these sources. Results: Mean age of respondents was 43.4 [SD 9.8] years with 60% women and 40% men. Most (92%) noted that their basic sources of specialised information were various medical magazines. In daily work, 84% use various directories and consult with colleagues. Doctors use books and other monographs in 55% of cases and 49.3% receive information from medical representatives of companies. Just over a quarter (29% and 26%) receive information from advanced training courses and from weekly hospital meetings. Only 1.7% of doctors use specialized medical Internet sites. The most important criteria for quality information were availability and reliability of data. The most trustworthy information, in the opinion of practising doctors, was from medical magazines (78%) and information from courses to upgrade qualifications (60%). Conclusion: Our data reflect the need to implement measures to improve the quality of medical information.