Aminophylline: Difference between revisions
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==Properties== |
==Properties== |
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It is more soluble in water than theophylline.White or slightly yellowish granules or powder, having a slight ammoniacal odor and a bitter taste. Upon exposure to air, it gradually loses ethylenediamine and absorbs carbon dioxide with the liberation of free theophylline. Its solutions are alkaline to litmus. One |
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It is more soluble in water than theophylline. |
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g dissolves in 25 mL of water to give a clear solution; 1 g dissolved in 5 mL of water crystallizes upon standing, but redissolves when a small amount of ethylenediamine is added. Insoluble in alcohol and in ether |
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==Mechanism of action== |
==Mechanism of action== |
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Revision as of 09:10, 11 March 2006
Aminophylline is a drug combination that contains theophylline and ethylenediamine in 2:1 ratio.
Properties
It is more soluble in water than theophylline.White or slightly yellowish granules or powder, having a slight ammoniacal odor and a bitter taste. Upon exposure to air, it gradually loses ethylenediamine and absorbs carbon dioxide with the liberation of free theophylline. Its solutions are alkaline to litmus. One g dissolves in 25 mL of water to give a clear solution; 1 g dissolved in 5 mL of water crystallizes upon standing, but redissolves when a small amount of ethylenediamine is added. Insoluble in alcohol and in ether
Mechanism of action
Aminophylline is less potent and shorter-acting than theophylline. It's most common use is in bronchial asthma.
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