Aronix^® can be used by men aged 18 or older who are suffering from Erectile Dysfunction Aronix^® works by relaxing the blood vessels of the penis, so more blood can flow into it. This causes an erection when you are sexually aroused. After sexual intercourse, your erection will go away as it would normally. In order for Aronix^® to be effective, sexual stimulation is required. Starts to work in 30 to 60 minutes, and may last up to 4 hours. Active ingredient is Sildenafil 50 mg.  Title:Warnings,