3 different tablets are currently available from the doctor and these work when there is sexual stimulation. Depending on the treatment, it will need to be taken 20 minutes to 1 hour before sex and the period of time over which it works can vary between 3 hours and up to 36 hours.
Viagra
Sildenafil, Sildenafil citrate, Revatio 50/100mg
One of the most popular medications used to treat erection problems in men