Document Detail

Potassium paraaminobenzoate (POTABA) in the treatment of Peyronie's disease: a prospective, placebo-controlled, randomized study.
MedLine Citation:
PMID:  15774254     Owner:  NLM     Status:  MEDLINE    
PURPOSE: The aim of this study was to investigate the effect of potassium paraaminobenzoate (Potaba) in Peyronie's disease in a prospective, randomized, double-blind, placebo-controlled, multicentre study during a 12-months period of treatment. PATIENTS AND METHODS: 103 patients with Peyronie's disease and a history <12 months, non-calcified plaques and without pre-treatment were included. 51 were randomized to potassium paraaminobenzoate, 52 to placebo receiving 4 x 3g/day for 12 months. Follow-up was performed during the treatment period. Response has been defined as regression in plaque-size and/or reduction in penile curvature of at least 30%. Data analysis was focussed on 75 patients who completed the study [valid-cases (VC)]. RESULTS: No severe adverse events occurred. Response rates were 74.3% on potassium paraaminobenzoate and 50.0% on placebo (p=0.016). Mean plaque-size decreased from 259 mm(2) to 142 mm(2) in the treatment arm. In the placebo group, plaque-size aggravated from 259 mm(2) to 303 mm(2) after 6 months but improved slightly to 233 mm(2) after 12 months. Differences between the groups were significant (p=0.042). Pre-existing curvature did not improve under the drug (p=0.066) but comparing the development of new curvature or deterioration of pre-existing curvature under potassium paraaminobenzoate penile deviation remained stable. However, under placebo penile curvature deteriorated significantly in 32.5% of the cases (p<0.001). No significant differences concerning decrease of pain could be observed between the two groups (82.6% vs. 77.3%). CONCLUSIONS: The results of this study indicate a significant plaque-related effect of potassium paraaminobenzoate. There was no relevant difference with regard to improvement of pre-existing penile deviation. However, under potassium paraaminobenzoate a significant protective effect on deterioration of penile curvature could be demonstrated. Potassium paraaminobenzoate appears to be useful to stabilize the disorder and prevent progression of penile curvature.
Wolfgang Weidner; Ekkehard W Hauck; Jörg Schnitker;
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Publication Detail:
Type:  Clinical Trial; Journal Article; Multicenter Study; Randomized Controlled Trial     Date:  2005-01-13
Journal Detail:
Title:  European urology     Volume:  47     ISSN:  0302-2838     ISO Abbreviation:  Eur. Urol.     Publication Date:  2005 Apr 
Date Detail:
Created Date:  2005-03-18     Completed Date:  2005-09-22     Revised Date:  -    
Medline Journal Info:
Nlm Unique ID:  7512719     Medline TA:  Eur Urol     Country:  Netherlands    
Other Details:
Languages:  eng     Pagination:  530-5; discussion 535-6     Citation Subset:  IM    
Department of Urology and Pediatric Urology Rudolf-Buchheim-Str. 7 D-35385 Giessen, Germany.
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MeSH Terms
4-Aminobenzoic Acid / therapeutic use*
Double-Blind Method
Middle Aged
Penile Induration / drug therapy*
Prospective Studies
Reg. No./Substance:
150-13-0/4-Aminobenzoic Acid

From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine

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