I currently take Zestoric - 12.5 mg daily for high blood pressure. When I was recently at an amusement park, riding a roller coaster, I fainted at the end of the ride. I was unconcious for approx 30 seconds, and when I cam to I was alert. This has never happened to me before, although I have sometimes felt light-headed after riding a particularly intense roller coaster. This most recent roller coaster had numerous drops and inversions, and ws considered quite intense.