[The general practitioner's knowledge and attitude towards proton pump inhibitors adverse effects]

Proton pump inhibitors (PPIs) are frequently prescribed by general practitioners (GPs) who consider these drugs to be safe. However, more and more adverse drug reactions (ADRs) associated with PPIs are described.

To determine the level of knowledge and attitude of GPs with respect to the ADRs of PPIs in adults.

The GPs of the Nouvelle-Aquitaine region and the chief residents or former chief residents of the 35 French university departments of general medicine were questioned online using a list of 12 ADRs based on a semi-systematic literature review (neutropenia, thrombocytopenia, anemia, hypomagnesemia, increased liver enzymes, renal failure, pneumonitis, skin reactions, fracture, gastric polyps, microscopic colitis, Clostridium difficile colitis) and their attitude towards these ADRs.

Out of the 232 (7.5%) GPs who participated, 38.4% had come across PPI ADRs (mainly digestive) in the last 6 months. These ADRs had been reported to pharmacovigilance in only 2.3% of the cases. No ADR at all was known by more than 70% of the GPs. The attitude of the GPs who had identified them was, in the majority, to stop PPI treatement. No difference in knowledge was found between university supervisors and non-supervisors. Finally, 74.7% of GPs declared that they required more information on IPP ADRs and 80.4% were willing to "deprescribe" these drugs.

Aside from digestive ADRs, GPs have a poor knowledge of IPP-related ADRs. Those who do know them have an appropriate attitude and interrupt IPP treatment. The information requested by the GPs about the risks of PPIs is pertinent, particularly in a PPI-adapted prescription procedure, which also involves knowing how to "deprescribe".