| potassium-40 | A naturally occurring (0.0117%) radioactive potassium isotope; beta emitter with half-life of 1.26 billion years; chief source of natural radioactivity of living tissue. (05 Mar 2000) |
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| potassium-42 | An artificial potassium isotope; beta emitter with half-life of 12.36 hr, used as a tracer in studies of potassium distribution in body fluid compartments and in localization of brain tumours. (05 Mar 2000) |
| potassium-43 | An artificial potassium isotope; a beta emitter with a half-life of 22.3 hr, used as a tracer in myocardial perfusion studies. (05 Mar 2000) |
| potassium acetate | An electrolyte replenisher, as well as a urinary and systemic alkaliser, which can be administered orally or by intravenous infusion. Formerly, it was used as a diuretic and expectorant. (12 Dec 1998) |
| potassium acid tartrate | KHC4H4O6;a diuretic and laxative. Synonym: cream of tartar, potassium acid tartrate. (05 Mar 2000) |
| potassium alum | AlK(SO4)2;an astringent and styptic; also used in veterinary medicine for ulcerative stomatitis, leukorrhoea, and conjunctivitis. Synonym: potassium alum. (05 Mar 2000) |
| potassium aminosalicylate | See: p-aminosalicylic acid. (05 Mar 2000) |
| potassium antimonyltartrate | <chemical> Bis(mu-(2,3-dihydroxybutanedioato(4-)-o(1),o(2):o(3),o(4)))diantimonate(2-) dipotassium trihydrate, stereoisomer. A schistosomicide possibly useful against other parasites. It has irritant emetic properties and may cause lethal cardiac toxicity among other adverse effects. Pharmacological action: schistosomicides. Chemical name: Antimonate(2-), bis(mu-(2,3-dihydroxybutanedioato(4-)-O1,O2:O3,O4))di-, dipotassium, trihydrate, stereoisomer (12 Dec 1998) |
| potassium atractylate | The potassium salt of atractylic acid, the natural source of the latter. (05 Mar 2000) |
| potassium bicarbonate | KHCO3;used as a diuretic to decrease the acidity of the urine, and as an electrolyte replenisher. (05 Mar 2000) |
| potassium bromide | KBr;an obsolescent sedative and hypnotic (sodium bromide is usually preferred). (05 Mar 2000) |
| potassium channel | Ion channel selective for potassium ions. There are diverse types with different functions, for example: delayed rectifier channels, M channels, A channels, inward rectifier channels, Ca dependent K channels. (18 Nov 1997) |
| potassium channels | Cell membrane glycoproteins selective for potassium ions. (12 Dec 1998) |
| potassium chlorate | Chlorate of potash, KClO3, used as a mouthwash and gargle in stomatitis and follicular pharyngitis; it is incompatible in the dry state with all easily oxidizable substances. (05 Mar 2000) |
| potassium chloride | <chemical> Potassium chloride. A white crystal or crystalline powder used as an electrolyte replenisher, in the treatment of hypokalaemia, in buffer solutions, and in fertilisers and explosives. Chemical name: Potassium chloride (KCl) (12 Dec 1998) |