I have been taking 2-4 tablets/day of Pepcid extra strength for almost 10 years. I spent all my time with doctors, cardiologists and psychiatrists to try and answer why I feel like I am feeling when I had something missing due to lack of funds to purchase it on a regular basis now for 6 or more months. The unexplained, extremely intensified panic/anxiety and a continuous bulging of 1 of the main arteries in my left leg when under severe stress and I already know, it is Pepcid A C, but thank you.