Aspirin, plavix and warafin (requires a perscription) are anti-platelet agents that help prevent clotting of the blood that can cause a stroke and/or cardiac arrest. In the event of a heart attack an aspirin taken with 30 minutes and chewed for the best effect.
I carry a bottle of chewable aspirin in the car and take it with me when away from the car. This is a small bottle so it's easy to carry. Then at home I have one in easy reach and out in the open for all to see just in case I can't get it my self. My Mother carries a small baggy with three or four pills in her purse.
Michael