Guidelines for ATC classification and DDD assignment - WHOCC

The DDD of phenazopyridine is based on analgesic treatment of
conditions such as cystitis, prostatitis and urethritis. The DDD for
phenylsalicylate is based on the prophylaxis of urinary tract
infections. The other DDDs are based on the prophylaxis of
urinary concrements.
G04C DRUGS USED IN BENIGN PROSTATIC HYPERTROPHY
G04CA Alpha-adrenoreceptor antagonists
Alfuzosin and terazosin used in the management of urinary obstruction
caused by benign prostatic hypertrophy, are classified here, while other
alpha-adrenoreceptor blocking agents used both in the management of
urinary obstruction and hypertension (e.g. doxazosin) are classified in
C02CA.
G04CB Testosterone-5-alpha reductase inhibitors
Combinations/combination packages with alpha-adrenoreceptor
antagonists are classified in G04CA.
G04CX Other drugs used in benign prostatic hypertrophy
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