I started this medication 5 days ago (I've had 9 doses so far). Since then, I've developed bloody diarrhea (stool typical of diarrhea with blood clots, surrounded by enough liquid blood to turn the toilet water bright red). I've also experienced a worsening of GERD symptoms, including burping, and a constant sensation of fullness/bloating. Is this related to the hydralazine or is it something separate? For added info, I've had GERD and gastritis for years and have had GI bleeding before with the use of NSAIDs meloxicam and ibuprofen (not combined, separate). This is 1 of 4 blood pressure medications I take daily, the others being metoprolol tartrate, valsartan, and doxazosin.