Thanks for posting your query.
If you are suffering from paroxysmal SVT
, then you should take I/v adenosin or verapamil
after consultation with treating physician.
You should also take diltiazem
on regular basis for prevention.
You should also go for electro-physiological studies of heart to confirm the nature the illness.
If all above mentioned medicines are not effective, then you should go for amiodarone
but this drug has multiple side effects in long term.
Get well soon.
Dr. Mayank Bhargava