Reports of allergy to proton pump inhibitors (PPIs), one of the most commonly used drug groups for both treatment and prophylaxis, are becoming increasingly common. In a study, lansoprazole was reported to be the most common and rabeprazole was reported to be the subgroup with the least allergy history in the PPI group.17 However, we assume that the main reason for this result is the frequency of prescription rather than the pharmacologic differences of the PPI subgroup. In our study, PPI allergy accounted for 2.3% of drug allergies.