Diltiazem does that - it can make you feel dizzy, tired and give you a whopper of a headache. It took me about 2 weeks to adjust to the medication and another 2 weeks before the headache went away completely.
Any idea how long your flutter lasts? If it happens frequently and lasts for a half hour or so, you may need aspirin or some other blood thinner. That's something you should discuss with your doctor. It wouldn't hurt to ask.
hi my a-fib, a-flutter & v-tach r getting out of control 2! my cardio wanted me2take diltiazem, but when i found out bout the drug i refused because im allergic 2 alot of the ingredients & faint alot , headaches etc already. its rediculous..what do we do???????