I did take that and had rather nasty side effects - chest pain, pretty severe shortness of breath, fatigue
, dizziness and pain in my legs with edema. I had to stop that one. Most recently I was using Diltiazem, also a CCB without any major side effects, just the usual adjustments.
How long have you been taking these 2 meds? You may still be in the adjustment period (the first 4 weeks or so). If the side effects are too serious, call the doctor.