Both Tadalafil and Viagra are used to treat erectile dysfunction (ED), but they work in different ways and for shorter or longer periods of time. Tadalafil, which is the main ingredient in Cialis and other drugs like it, is known to work for a longer time than Viagra (sildenafil). Because it works for up to 36 hours after taking it, tadalafil is sometimes called "the weekend pill." Some men may like this longer length of action because it gives them more options for when to be sexual. Viagra, on the other hand, usually works for 4 to 6 hours after being taken. Viagra works about the same way that tadalafil does at first, but its effects don't last as long.
In terms of strength, both tadalafil and sildenafil are thought to be good ways to treat erectile dysfunction, and most men find that they work about the same. But how these medicines work for different people may be different, and some guys may find that one medicine works better for them than the other. Overall, whether tadalafil is "stronger" than Viagra relies on the person, their needs, and how well they respond to treatment. Some men may like how tadalafil works for a longer time, while others may find that sildenafil works better for them. To find the best treatment for your erectile dysfunction based on your unique situation, it's important to talk to a medical expert.