Hi My Name Is Violet I Would Like To Know

hi my name is violet i would like to know the inter act with dioxion and water pills lasix 2nd i have a narrow valve and a fib now after bad of pnuomoinia i have congestive heart failiur i would like some info please after i read in the meds sheet i was worried to take it the dr gave me 2 mg to start i always have fast heart beat thank you