AIM:To review the relevant literature in an effort to examine the body of evidence available to date.METHODS:Ovid MEDLINE search database was queried using MeSH terms“penile induration”,“peyronie’s disease”,“Collagenases”and“Collagenase”using various permutations.No temporal parameters were employed.RESULTS:In all,5 relevant clinical trials were isolated from 34 results.These trials were analyzed using the Oxford Centre for Evidence-Based Medicine criteria.They were further examined based on study design and methods;the primary and secondary outcomes were reviewed for treatment efficacy and collagenase-related side effects.CONCLUSION:Intralesional collagenase appears to be safe and effective in the non-surgical treatment of Peyronie’s disease.However,the data remains limited and further inquiries into the safety of collagenase,treatment standardization and standardized outcomes reporting remain necessary.Furthermore,studies comparing intralesional collagenase to alternative medical and surgical therapy will be important in guiding the future treatment decision process.