I recently had a very bad health anxiety episode that lasted about a week. I'm feel mostly better now, but I informed my doctor about it and he has put me on 20mg of Citalopram. I'm currently on 10mg, but I'm worried about increasing the dose. I'm aware that citalopram can cause long QT (a type of irregular heartbeat). I'm worried that this could cause sudden death, especially if I'm also doing exercise or having a panic attack while on it. I also find it disturbing that if I go on American websites they basically say mixing alcohol with citalopram is a death sentence, but on the NHS website it says that it's safe to drink alcohol while on it. I know I should try to trust the NHS over the other sites, but why is there such a divergence in opinion? Is the NHS ignoring how dangerous it is?