My Daddy has been diagnosed with non-hodgkin's lymphoma and is going thru his 2nd day of his first cycle of r-chop, what my main concern is, he's has been on medication for a past heart attack and stroke, I'm not sure of the medication's he has taken, he tell's me it's the typical med's from past conditions, he live's in a different state. Does anyone know of anyone or are currently going thru same sort of situation. He's geared up for the fight, which give's me great hope...but, does the chemothereapy negate the med's he's on for his heart, or his stroke meds?