A Patient Who Takes Digoxin Reports Taking Psyllium (Metamucil)three or Four

A patient who takes digoxin reports taking psyllium (Metamucil) three or four times each month for constipation.The primary care NP should counsel this patient to:

A) decrease fluid intake to avoid cardiac overload.
B) change the laxative to docusate sodium (Colace) .
C) take the digoxin 2 hours before taking the psyllium.
D) ask the cardiologist about taking an increased dose of digoxin.