According to research carried out, the ingredients contained in Eron Plus and Eron Plus Before help in achieving the best results in combating erectile dysfunction. Thanks to L-arginine, the sexual performance of men rises (as evidenced when tested on men with ED), maca root makes erections stronger and sex more satisfying (research published in the journal CHS Neuroscience & Therapeutics in 2008 and in the magazine Andrologia in 2009) and fenugreek increases libido, and provides energy (clinical study from 2011) and also increases the level of testosterone (Gencor Nutrients, 2008).