Congestive Heart Failure and fatigue question

My 75 yr. old mother-in-law has been living with congestive heart failure
for several years. She was diagnosed 5 yrs. ago. And since that time, as
been managing her condition fairly well. My question is centered around her
constant fatigue. Is there any new medication/ supplement that has been
proven to help offset the fatigue CHF patients experience? Thank you.


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