Is It Safe To Have Hawthorn Instead Of Digoxin For Atrial Fibrillation?

Its about Coumadin(FaktorLeidenFive,2000 and 2001 pulmonaryEmbolysms) /paraxysmol Afibs/ alternative Medicine. Cadiologist prescribed Digoxin 125mcg daily to prevent heavy Afibs . Digoxin gave me blured vision, jettery, insecurity walking. stopped it after 13 days. Started 4 days ago with 3x500 mg HAWTHORN by VitalityWorks,Inc. Feeling much better , seldom skipped heartbeat, . Please tell me if Hawthorn can replace Digoxin. I am 80, all my life believing in natural healing. Love Dr.Weils book and teaching. Would appreciate your knowlage greatly, thanks in advance, YYYY@YYYY