I've taken daily cialis with multiple pump products with no problem. I'm sure it can cause too much of a drop in blood pressure for some but I've never had a problem. I'd just start low and see how it goes. I'm sure if someone is taking 20 or 30 mgs of c a pop then it's more likely to happen. I've even have seen pills with cialis and viagra combines think they are called Superman's. Lol. Also I'm not a dr so don't listen to anything I say. Ha just in case.