Table 1 Search strategy

PUBMED

((((elderly) OR (aged [Mesh Term]) OR (older))) AND (((anticholinergic drugs) OR muscarinic antagonist [Mesh Term]) OR “agents, anticholinergic”) OR anticholinergic load) OR anticholinergic burden) OR ACh scales)) AND ((((xerophthalmia [Mesh Term]) OR dry eye)) OR ((dryness, mouth OR xerostomia [Mesh Term] OR hyposalivation OR dry mouth) OR (“negative outcomes OR “anticholinergic side-effects”))). Filter: (SPECIES: “humans”; AGE: “Aged: 65+ years”; LANGUAGE: “English”, “Spanish”).

CINAHL

(‘cholinergic receptor blocking agent’ OR ‘muscarinic receptor blocking agent’ OR ‘burden anticholinergic’ OR ‘anticholinergic load’ OR ‘ACh Scales’) AND (‘xerostomia’ OR ‘hyposalivation’ OR ‘xerophthalmia’ OR ‘eye dry’) AND ([aged]/lim OR [very elderly]/lim) LANGUAGE: “English”, “Spanish”

EMBASE

(‘cholinergic receptor blocking agent’ OR ‘muscarinic receptor blocking agent’ OR ‘burden anticholinergic’ OR ‘anticholinergic load’ OR ‘ACh scales’) AND (‘xerostomia’ OR ‘dry mouth’ OR ‘hyposalivation’ OR ‘xerophthalmia’ OR ‘eye dry’) AND ([aged]/lim OR [very elderly]/lim) LANGUAGE: “English”, “Spanish”