| sodium hydroxide | <chemical> A highly caustic substance that is used to neutralise acids and make sodium salts. Pharmacological action: caustics, pharmaceutic aid. Chemical name: Sodium hydroxide (Na(OH)) (12 Dec 1998) |
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| sodium hypochlorite | <chemical> The sodium salt of hypochlorous acid. It is used as an oxidizing and bleaching agent and as a disinfectant. Pharmacological action: disinfectants, oxidants. Chemical name: Hypochlorous acid, sodium salt (12 Dec 1998) |
| sodium hypophosphite | NaPH2O2-H2O;formerly used as a nerve tonic. (05 Mar 2000) |
| sodium hyposulfite | Na2S2O3-5H2O;an antidote in cyanide poisoning in conjunction with sodium nitrite; used as a prophylactic agent against ringworm infections in swimming pools and baths, and to measure the extracellular fluid volume of the body. Synonym: sodium hyposulfite. (05 Mar 2000) |
| sodium ichthyolsulfonate | An alterative and antiseptic. (05 Mar 2000) |
| sodium indigotin disulfonate | <chemical> 3,3'-dioxo-(delta-2,2'-biindoline)-5,5'-disulfonic acid disodium salt. An indolesulfonic acid that is used as a dye in renal function testing and as a reagent for the detection of nitrates and chlorates and in the testing of milk. Pharmacological action: dyes, indicators and reagents, renal agents. Chemical name: 1H-Indole-5-sulfonic acid, 2-(1,3-dihydro-3-oxo-5-sulfo-2H-indol-2-ylidene)-2,3-dihydro-3-oxo-, disodium salt (12 Dec 1998) |
| sodium iodide | <chemical> Sodium iodide (nai). A compound forming white, odourless deliquescent crystals and used as iodine supplement, expectorant or in its radioactive (I-131) form as an diagnostic aid, particularly for thyroid function determinants. Chemical name: Sodium iodide (NaI) (12 Dec 1998) |
| sodium iodide iodine-131 | Prepared from radioactive iodine (131I); practically carrier-free, with a half-life of 8.0 days; used as a diagnostic agent in suspected thyroid disease and in the treatment of selected thyroid diseases. (05 Mar 2000) |
| sodium isotopes | Stable sodium atoms that have the same atomic number as the element sodium, but differ in atomic weight. Na-23 is a stable sodium isotope. (12 Dec 1998) |
| sodium lactate | The sodium salt of racaemic or inactive lactic acid. It is used intravenously in a one-sixth molar solution as a fluid and electrolyte replenisher to combat acidosis. (12 Dec 1998) |
| sodium lauryl sulfate | CH3(CH2)10CH2OSO3Na;a surface-active agent of the anionic type. (05 Mar 2000) |
| sodium levothyroxine | 3,3',5,5'-tetraiodothyronine pentahydrate;Sodium salt of the natural isomer of thyroxine, a thyroid hormone. It is twice as effective as the racaemic form. Used in the treatment of hypothyroidism in humans and animals and to treat lowered fertility in bulls and to stimulate lactation in animals. (05 Mar 2000) |
| sodium liothyronine | Sodium l-triiodothyronine, the physiologically active isomer of triiodothyronine, twice as active as the racaemic form; used in the treatment of thyroid deficiency syndromes. (05 Mar 2000) |
| sodium metabisulfite | Na2S2O5;used as an antioxidant in injectable solutions. (05 Mar 2000) |
| sodium methicillin | Sodium 2,6-dimethoxyphenylpenicillin monohydrate;a semisynthetic penicillin salt for parenteral administration; restriction of its use to infections caused by penicillin G-resistant staphylococci is recommended; it is less effective than penicillin G in infections caused by haemolytic streptococci, pneumococci, gonococci, and penicillin G-sensitive staphylococci. Synonym: sodium methicillin. (05 Mar 2000) |