It made a tremendous difference in my pulse, bp, and even in decreasing stomache nausea and constipation (stomache
is also controlled by vagal nerve). I felt almost normal.
Digoxin is the only drug I know of on the market which strengthens the vagal nerve. It is an old drug which was used for heart failure years ago. Unfortunately, I had bad side effects and had to cut my dose in half. Even if the MD does't go along with the digoxin, they are the specialists to see for the vagal nerve.