I was able to reduce my afib with a drop of clear potassium iodide and more protein (red meat). However, if I get it, 100 or sometimes 200 mgs of tryptophan completely eradicates it. This answer came to me through a dream. Strange, I know!
I have started taking about 50 mg of tryptophan before bed and I sleep great. I don't know why it works so well in my case for afib!!!! Might be worth a try. I am using a pretty low dose. I've had afib since I was 3 years old. I agree that taurine is good too. But that didn't actually stop my afib. Tryptophan completely stops it within an hour!!!!
Hope this helps someone!