Well, my sister has been on Dynacirc for treating her high blood pressure but as far as I know she hasn't had any side effect with the medication. But I read on http://www.drugdelivery.ca/s31055-s-DYNACIRC.aspx that some of the serious side effects of Dynacirc are: difficulty breathing,closing of the throat,swelling of the lips,swelling of the tongue,swelling of the face,hives,an unusually fast or slow heartbeat,fainting,severe dizziness,abnormal behavior,psychosis,chest pain,yellowing of the skin or eyes,swelling of the legs,swelling of the ankles Less serious are: unusual headache,fatigue,tiredness,mild dizziness,nausea,vomiting,diarrhea,flushing,rash |