This registry is a place to share positive or negative side effects of using Uni-Guaifen 600/300. If you directly experienced a side effect while using Uni-Guaifen 600/300, then we encourage you to enter it here. Please note that entries here are the experiences of individual users, and in no way means that you or anyone else will experience the same side effect, since the same medication affects people in different ways. Please always contact your physician.
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August 27th
2007
1:29 PM
Guaifen with Bromfed caused a very high heart rate. I took it once.
-- By gilbertelite | Reply | Private Message meThe 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.