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  • Title: Double-blind controlled clinical study of the efficacy and tolerability of diclofenac-N-(2-hydroxyethyl)-pyrrolidine lecithin gel compared with diclofenac-N-(2-hydroxyethyl)-pyrrolidine gel in patients with peri and extraarticular inflammatory diseases.
    Author: Fioravanti A, Cicero MR, Nerucci F, Manopulo R, Marcolongo R.
    Journal: Drugs Exp Clin Res; 1999; 25(5):235-40. PubMed ID: 10568212.
    Abstract:
    To evaluate the efficacy and tolerability of the new diclofenac-N-(2-hydroxyethyl)-pyrrolidine lecithin gel (DHEP lecithin gel, with 1.3% DHEP and 2.4% lecithin) compared with the efficacy and tolerability of diclofenac-N-(2-hydroxyethyl)-pyrrolidine gel (DHEP gel) in peri and extraarticular inflammatory states, a controlled, randomized, double-blind clinical study was conducted. Two groups of 50 patients each were enrolled and were given one of the two different formulations with a slight massage on the painful area three times a day for 10 consecutive days. Patients received a self-evaluation notebook in which to record daily assessment of spontaneous pain (Huskisson's visual analogue scale). On days 0, 3 and 10, the patients were visited by the investigator. All patients completed the study. The assessment of spontaneous pain showed that although pain decreased in both groups, the decrease was more marked in patients taking DEHP lecithin gel and that it reached a statistically significant difference at days 5, 6, 7 and 8. This decrease was also confirmed by assessments on the ordinal scale. Although periarticular swelling disappeared in both groups, swelling severity decreased sooner in patients taking DHEP lecithin gel. The efficacy and safety of both treatments was judged to be good or excellent by 70% of the patients in each group. The efficacy of the active principle, pyrrolidine salt, is confirmed. Moreover, the formulation containing lecithin passes through the skin lipid barrier more easily than the formulation without lecithin and is as valid as the other in the therapy of rheumatic disorders. Finally, DHEP lecithin gel preparation has a quicker therapeutic action on symptoms, such as spontaneous pain and local swelling, than DHEP gel.
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