Cialis and duration

I bought some generic cialis and I don’t feel the effect extends to 36 hours. It could be the particular generic cialis I bought or “generic” being the cheap bootleg form. What kind of cialis do you fellas use and how long does it last? And Is it the good brand or generic brand?

Cialis is good for me for up to 24 hours. Sometimes a bit more, sometimes a bit less. However as I approach 24 the effectiveness seems to diminish.

My friends that use research chemicals liquid cialis say the same thing about what they get as what I say about what I get from the pharmacy. Some labs do tend to overdose it a bit if you are lucky enough to find the right one.