He has what I think is some type of convulsion -he gets this blank star - starts shaking - eyes roll up and then passes out - he is disorented when he comes to and very weak - after the first one they did a complete checkup with a heart spec and a pulmonary spec and found nothing wrong. Both times he had taken Cialis prior approx 4 hrs before - I cannot convince him that it could be the cialis - I am very concerned