title: Hypokalaemia and drinking green tea: a literature review and report of 2 cases.
abstract: We report the association between excessive consumption of green tea and hypokalaemia in an Oriental couple. Both patients were asymptomatic and the abnormal electrolyte level was only detected on routine blood tests. When they were advised to reduce the consumption of green tea, the abnormally low potassium level was reversed. We have not found such an association reported in the medical literature. The health benefits of green tea consumption are well publicised but the potential side-effects of overconsumption are less well known. We would like to report this association to alert clinicians about this potentially serious complication. This is especially relevant for those who are also taking prescribed medications that can lower potassium levels and/or sensitise patients to potential harm from hypokalaemia.
authors.affiliation: Brighton and Sussex Medical School, Brighton, UK.
authors.forename: Sebastian Jen Kin
authors.initials: SJ
authors.lastname: Chong
authors.affiliation: The Rosendale Surgery, London, UK.
authors.forename: Kerry Antoinette
authors.initials: KA
authors.lastname: Howard
authors.affiliation: Brighton and Sussex Medical School, Brighton, UK.
authors.forename: Chloe
authors.initials: C
authors.lastname: Knox
mesh_terms: D000368:Aged; D017311:Amlodipine / Q000627:therapeutic use; D000959:Antihypertensive Agents / Q000627:therapeutic use; D001539:Bendroflumethiazide / Q000627:therapeutic use; D004327:Drinking Behavior; D005260:Female; D006801:Humans; D006973:Hypertension / Q000150:complications / Q000188:drug therapy; D007008:Hypokalemia / Q000209:etiology*; D017706:Lisinopril / Q000627:therapeutic use; D008297:Male; D013662:Tea / Q000009:adverse effects*
chemical_list: D000959:Antihypertensive Agents; D013662:Tea; D017311:Amlodipine; D001539:Bendroflumethiazide; D017706:Lisinopril