The main difference between regular Viagra and Viagra Connect is that the over-the-counter version is only available in the 50mg dosage. It can be temporary or permanent. Viagra Connect is a medicine used to treat erectile dysfunction ED in men. Tadalafil starts to work within 30 to 60 minutes and can remain active for up to 36 hours. You should take your Viagra tablet about one hour before you plan to have sex. Check the ingredients listed in the leaflet that comes with the medicine if you know you have specific allergies or intolerances. This means that you have to be sexually stimulated for sildenafil to produce and maintain an erection.50mg (Viagra Connect). The standard dose, the 50mg Viagra is sold over the counter as Viagra Connect. 74% of men who use the 50mg dose can achieve an erection, according to studies. mg. The higher dose of Viagra is the mg pill. It tends to be recommended to those who have tried Viagra Connect but have not seen results. . · Viagra Connect is a medicine that treats ED symptoms such as getting an erection, the hardness of an erection, and maintaining an erection in men aged 18 years and older. The treatment is not suitable: For women. For men who do not have ED symptoms. When other health problems might cause issues. Viagra Connect, Viagra and Sildenafil are erectile dysfunction treatments that work within your body to help you achieve and maintain an erection that is hard enough for sexual intercourse. The treatment allows the blood vessels within the body to expand and relax, causing blood to flow to the penis, resulting in an erection.