Echinacea purpurea (Purple coneflower) is an immunostimulating drug, containing multiple substances. The most important substance in activity is polysaccharide,
Introduction: Sexual response cycle is modulated by a variety of biological factors, especially antidepressants and antipsychotics. Although the circuit of roma
Introduction: Erectile episodes occurring in the night time are considered normal and are usually related to the REM sleep. Spontaneous painful erections are un