Mechanism of action of aurogra is similar to the branded Viagra drug as both are loaded with the same chemical which is sildenafil citrate. Are you looking for manufacturer and supplier of Sildenafil Tablets? Wellona Pharma one of the best manufacturers & suppliers of Sildenafil tablets. Erectile dysfunction is the process which has many reactions involved in it. It starts in the brain and ends with the harder male organ. When your brain gets a signal saying that men is getting sexual stimulation, it responds with the signals that make the arteries to carry more and more blood to the male reproductive organ. As a result it attains hardness and it stays in that state for longer time span.