question: I am a 25 year old male. I have been experiencing certain symptoms whenever I get tensed / excited such as sensation of heart beat (pounding feel on the chest), fleeting breathlessness, chest pain,etc. The symptoms usually dissappear once I relax myself and do not usually last for more than 2 - 3 minutes. I have also experienced panic attacks and palpitations occassionally (3 - 4 times in the last 4 years or so). I recently met a doctor who asked me to get my ECG done. I got my ECG done and the doctor said I was having sinus tachycardia. But for the fast heart rate, he said my ECG was otherwise normal. I was asked to get my echocardiogram done (to rule out other complications like MVP,etc.) and also to undergo a thyroid test. In the mean time, I was prescribed Inderal 40 and Clonotril tablets. I am getting my echo and thyroid tests done shortly. But I am a little concerned as to whether I really need to take the medication he prescribed (Inderal 40 and Clonotril). The symptoms I have described above do not really bother me since they occur only occassionally when I get involved in a tense situation or so. Moreover, they don t last for more than a few minutes and as long they don t point to any serious trouble, the symptom itself is not a problem. I am worried if the above medication could cause side effects and would like to avoid them if possible. Can you please advise?