Isosorbide dinitrate

Manufacture of vitamin C starts with the conversion of sorbitol to L-sorbose. Sorbitol and xyHtol have been used for parenteral nutrition following severe injury, bums, or surgery (246). An iron—sorbitol—citric acid complex is an intramuscular bematinic (247). Mannitol administered intravenously (248) and isosorbide administered orally (249) are osmotic diuretics. Mannitol hexanitrate and isosorbide dinitrate are antianginal dmgs (see Cardiovascular agents). 

Isosorbide is rapidly absorbed and undergoes rapid first-pass metaboHsm by the Hver. The bioavaUabUity of the subHngual and chewable tablets is 59% and 22%, respectively, for the regular tablet. Isosorbide is metabolized to isosorbide-2-mononitrate and isosorbide-5-mononitrate, both of which have pharmacologic activity. The elimination half-Hves of subHngual and po isosorbide dinitrate ate 1 and 4 h, respectively. Those of the 2- and 5-mononitrate metaboHtes are 1.5—3.1 h and 4—5.6 h, respectively. The two metaboHtes prolong the elimination half-life of the dinitrate. Adverse effects with isosorbide are similar to those described for nitroglycerin (99). 

Passive transdermal dehvery systems on the market tend to be either matrix or membrane controUed. In matrix devices, the stmctural and molecular characteristics of the dmg-polymer matrix determine dmg release. Examples of polymer matrix-controUed diffusional systems for angina prophylaxis include Nitro-Dur and Nitrodisc, which provide transdermal dehvery of nitroglycerin [55-63-0], and Erandol, a tape that releases isosorbide dinitrate [87-33-2]. Matrix diffusional systems have been used for dehvering dmgs with a wide therapeutic index. 

ISOSORBIDE DINITRATE MIXTURE with not less than 60X lactose, 2907 87-33-2... 

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