2 aspirin is regular normal dose. The baby aspirin I take in the morning is low dose. I'm doing this for a bit to see if it helps with internal vibrations. The blood may be thick so I'm thinning it out some to see if it helps. I'm on metoprolol so that slows my heartbeat down. Even after I do some form of activity my heart rate increases only for about 30 seconds then back to slow. It's been as low as 56 while lying in bed. It usually is around 60-65 resting. My doctor knows I take it and has said nothing negative about it.