Hm. Well, people over 65 definitely could be having memory issues. Accidental overdose because they didn't remember that they already took a dose?
Many people use the ER because they don't have good health insurance and head for the ER for everything. The numbers could be huge, if you account for calls to doctor's offices and doctor visits.
Many doctors are pill happy, so it's no surprise that there are adverse reactions. I honestly don't see that those numbers are very usable if you're thinking in terms of avoidance of certain meds. A good red flag to pay attention to what you're being prescribed, tho.
AVR 4/18/06, age 52. Bovine tissue. CE Perimount RSR Model 2800. 23 mm. BAV diagnosed age 27(1981). Moderate stenosis (1.0 cm) 9/03; severe stenosis (.7cm) 12/05, Aortic measure at surgery 4/06, critical (.53 cm)