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|  | The Anatomical Therapeutic Chemical (ATC) classification system |  | 
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 Level 4
 
 C - Cardiovascular systemC02 - AntihypertensivesC02L - Antihypertensives and diuretics in combinationC02LE - Alpha-adrenoreceptor antagonists and diuretics
 
 C02LE01 - Prazosin and diuretics
 
 
 
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