MY FATHER HAS BEEN TAKING FUROSEMIDE 40 MG DAILY SINCE FEB 2014. JUST LOWER TO 20 MG,HE IS SHORTNESS OF BREATH, SWELLING OF FACE AND TONGUE, ALSO WHEN HE SPIT WE FIND OLD BLOOD, DARK BROWN COLOR FOR MONTHS, NOW BOTH OF HIS LEG IS SWELLING AND TIGHT , HIS IN PAIN. WE BEEN TOLD HIS RED BLOOD COUNT IS LOW, WHAT SHALL I DO?