The drug interaction, I had, caused low blood pressure. I could not get out of bed without feeling very faint. The attending was concerned and determined to find out why. My blood pressure was regularly checked. I had an ECG, which ruled out cardiac problems, and a blood test that checked my hemoglobin and iron levels, and vitamin deficiencies, which I passed. Eventually, it was determined to be caused by an interaction between a benzodiazepine and an anti-psychotic. After the benzodiazepine was discontinued and the anti-psychotic dose lowered, my blood pressure rose.