I have had PACs for years as well and finally flipped into Atrial Tachycardia (SVT) and had an ablation. Unfortunately, they returned a year and a half later and my burden was 18-26% depending in the day. They tried another ablation but was unsuccessful, so I also began the med path. Everything so far has caused side effects. Have you tried Propranolol? That was okay for me but it doesn't work for me any more. Flecainide was horrible. I am about to try Norpace. I did finally meet with a Naturopath and she had me take Magnesium, and Heart Health. She checked my cortisol. Nothing really helped significantly. There is some evidence that Arginine and Taurine can help, but I had no luck with that either. If you haven't, ask about Propranolol (it also helps with anxiety) and if not better, see if they would consider an EP study/ablation for quality of life.