AGTR1 and cardiac arrhythmia: For example, losartan (CID 3961) is annotated with three Medical Subject Headings (MeSH) terms, “Angiotensin II Type 1 Receptor Blockers”, “Antihypertensive Agents”, and “Anti‐Arrhythmia Agents”, as shown at https://pubchem.ncbi.nlm.nih.gov/compound/3961#section=MeSH‐Pharmacological‐Classification.