Hello! Welcome and thank you for asking on HCM! I understand your concern and would explain that palpitations and anxiety are closely related. Your symptoms seem to be related to anxiety and depression. Your heart seems to be in optimal conditions (based on your performed cardiac tests) Nexito plus is a benzodiazepine, which can be used for a long term therapy (contrary to other benzodiazepines). I would recommend consulting with a psychiatrist, which is a specialist in the field of depression and anxiety. He could help you manage these symptoms better. Psychotherapy could be helpful in your situation. Instead of Nexito plus, you should discuss with the psychiatrist the possibility of starting an antidepressant (like SSRI,etc), which are very effective against anxiety and depression. Yoga, recreational sport activities are also very effective too. I would also advise to avoid caffeine intake, which is known to trigger anxiety. Hope to have been of help! Best regards, Dr. Iliri