Uni-guaifen 600/300 High Heart Rate, Bromfed, Guaifen, Waveforms, Ekg
Guaifen with Bromfed caused a very high heart rate. I took it once.
The doctor did a EKG and determined the heart waveforms looked normal but really fast. Over 160bps when it slowed enough to count.
I was given something to slow the heart. It took 3 days for the rate to drop to normal.