Conversation: The conversation between human and AI assistant.
[|Human|] hi my age is 51 y and i have been using cialis & Lavetra for about 5 years during all intercourse but now my penis does not become hard enough (after taken lavetra or cialis) if it got hard but not keep sustain the hardness for getting success in intercourse
[|AI|]  Hello, As you are 51, at this age, erectile dysfunction needs to be taken seriously. It may because of some hormonal problems, problems inside the penis or diseases in blood.  Smoking and alcohol aggravates the problem. In some cases, it may be the early sign of heart disease.  As Calls and Lavern do not help, you need physical examination by doctor, some blood tests to look for hormonal problems and preferably Penile Doppler to look for blood flow in the penis.  Meanwhile, have healthy diet, avoid fast food and smoking. Get rid of anxiety as it can cause performance failure. Try keel exercise.  Hope I have answered your query. Let me know if I can assist you further. Take care