Adverse Effects

Definition and examples Any pharmacologically active drug can also cause adverse drug reactions (ADRs). According to the WHO definition, these are harmful and unintended effects during intended use. In English, this is referred to as an (ADR). Typical adverse effects are: Headache, dizziness, sleep disturbance, fatigue, impaired reaction time. Gastrointestinal symptoms such as nausea, diarrhea, … Adverse Effects