What is the main difference between Viagra and Cialis?

I haven't used Viagra, but I have used Cialis now for about 3 years. I opted for it because it was described as remaining effective for about 36 hours, versus about 4 hours for Viagra. That's a lot of bang for the bucks! And my experience of Cialis is that it does indeed remain very effective for 36 hours. I just ordered another batch! Incidentally, I find that 10mg works for me, so I ordered the 20mg tablets and take half of one each time. Even better value for money!

If you require specific medical advice about the best option for you, you need to ask these questions through your patient record or by e-mail so that we can tailor our advice to your specific situation.