Hello, my name is Dr.Dorina Gurabardhi. I understand your concerns. Actually metoprolol is sometimes used off-label to control anxiety, including occasional performance anxiety and various anxiety disorders. Metoprolol should be taken with food, or just following a meal, and with a full glass of water. It is important to try and take metoprolol at the same time each day. You should also stick to a low-sodium diet. If the problem continue you should contact with your cardiologist. Hope my answer was helpful, if you have any other questions I ll be glad to answer,thanks!