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|  | The Anatomical Therapeutic Chemical (ATC) classification system |  | 
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 Level 5
 
 C - Cardiovascular systemC02 - AntihypertensivesC02L - Antihypertensives and diuretics in combinationC02LG - Hydrazinophthalazine derivatives and diureticsC02LG02 - Hydralazine and diuretics
 
 Hydralazine and diuretics
 
 
 
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