Hello, I understand you have a question about metoprolol for SVT. Metoprolol, like Nadolol, are both beta-blocker medications, which work on the heart to decrease the heart rate and slow the transmission of electrical current through the heart, which helps control abnormal heart rhythms like SVT. Since they both work the same way, metoprolol would be appropriate for your condition. I m not sure why exactly it is not listed for SVT in the article you mentioned, but sometimes medications are used off-label . Which means the drug company did not specifically request approval from the FDA for a certain disease (in this case, for SVT), but the medication can be used, and often is used, for that condition. It is normal practice for doctors to use medications off-label like this, and sometimes the best medication available is off-label . Hope I have answered your query. Let me know if I can assist you further. Take care Regards, Dr Aaron Branch, General & Family Physician