Comparative randomized crossover clinical study for the evaluation of erectile dysfunction medications via novel pentagon system

Nounou, Mohamed Ismail; El Haddad, Ghada; Elamrawy, Fatema; El Gaddar, Ola; El-Yazbi, Ahmed F.; Eshra, Ahmed G.

doi:https://doi.org/10.2174/1574886313666180122163322

Comparative randomized crossover clinical study for the evaluation of erectile dysfunction medications via novel pentagon system

Date

2018

Authors

Nounou, Mohamed Ismail

Publisher

Bentham Science Publishers B.V.

Abstract

Introduction: Due to the chaos in the legislation in the Middle East, male enhancement nutraceuticals may be sold without any registration or evaluation. These products need to be evaluated with respect to safety and efficacy. Furthermore, cultural and social considerations in the Middle East prevent the use of international evaluations schemes for erectile dysfunction. Aim: Evaluating the safety and efficacy parameters of generic and nutraceutical products for erectile dysfunction in the Middle East through a custom-designed, representable and simple system tailored to the regional culture. Methods: 74 healthy male volunteers were enrolled into a comparative, simple randomized, single dose, double blind, and crossover clinical study incorporated with a tailored-designed questionnaire. Safety assessment included laboratory analysis for liver functions and measuring blood pressure. Main Outcome Measures: Subjective data regarding safety and efficacy were assessed from the validated questionnaire. Blood pressure was measured. Blood samples were collected to assess the drug/adulterants concentration and liver and kidney functions. Results: All tested nutraceuticals showed undeclared Sildenafil citrate in patients. Questionnaire results showed high inter-patient variability with respect to efficacy and comparable safety profile compared to Viagra®. Conclusion: The validated tailored-designed questionnaire effectively assessed the efficacy and safety of male enhancement products. The male enhancement nutraceuticals, sold in Egypt, claimed to be 100% natural are adulterated and of questionable safety profile. © 2018 Bentham Science Publishers.

Keywords

Adulteration, Clinical study, Nutraceuticals, Pentagon, Phosphodiestrase inhibitors, Questionnaire, Safety and efficacy assessment, Sildenafil, Tiger king, Adult, Cross-over studies, Dietary supplements, Double-blind method, Drug contamination, Drugs, generic, Egypt, Erectile dysfunction, Humans, Male, Middle aged, Phosphodiesterase 5 inhibitors, Sildenafil citrate, Treatment outcome, Alanine aminotransferase, Aspartate aminotransferase, Caffeine, Gamma glutamyltransferase, Generic drug, Nutraceutical, Tadalafil, Vardenafil, Phosphodiesterase v inhibitor, Alanine aminotransferase blood level, Article, Aspartate aminotransferase blood level, Backache, Blood pressure, Body weight, Cigarette, Clinical evaluation, Coffea, Controlled study, Coughing, Crossover procedure, Double blind procedure, Drug blood level, Drug efficacy, Drug safety, Efficacy parameters, Flushing, Food intake, Gamma glutamyl transferase blood level, Human, Human cell, Indigestion, Kidney function, Limit of detection, Limit of quantitation, Liver function, Major clinical study, Middle east, Mucus, Nausea and vomiting, Nose obstruction, Pharmacy, Priority journal, Quantitative analysis, Randomized controlled trial, Rash, Rhinorrhea, Risk assessment, Sexual behavior, Social class, Tablet, Tea, Vision, Analysis, Blood, Comparative study, Dietary supplement, Metabolism, Prevention and control