I take atenolol (beta blocker) for anxiety and I also have SVT (supraventricular tachycardia). They tell me to STOP taking the atenolol or else I will have a heart attack if I do certain drugs. What drugs should I avoid? TL;DR inside.

So, first off I personally take atenolol for anxiety and high blood pressure. I have SVT though which is just a fancy acronym for "your heart beats too fast". I've been warned by my doctor to STOP taking atenolol if I plan to take certain drugs. I would like to know which drugs I need to avoid taking. <br><br>I've heard rumors that atenolol combined with cocaine is a bad idea but that's about it.