Scope and characteristics of adverse drug reactions in the general population

In a study of 1000 adult patients with unplanned admission to a tertiary hospital, the prevalence of adverse drug reactions (ADRs) at the time of admission was 12.4 percent, and the prevalence of ADRs causing admission to the hospital was 8.1 percent. The most common ADRs were gastrointestinal-related, while the most common drug category causing ADRs were cardiovascular drugs.