Hi all. I routinely carry a small vial of 0.4mg nitroglycerine in my pocket - no matter where I am. It occurred to me recently while on the treadmill at my fitness center that if the guy or gal next to me went down and complained of the "classic" chest discomfort I might be able to help alleviate heart damage by giving them a tablet of my Nitro - after 911 was called, of course. Is this something to offer? Are there serious side affects for someone who turns out later to not have suffered a heart incident? What if the person is unconscious? Or in need of CPR - a nitroQ under the tongue and continue with the chest presses? Ordinarily I'd never share prescription meds with anyone, but this seems a little different - possibly life and death different?