Are allergic to diltiazem hydrochloride or any of the inactive components used to make the medication. Your healthcare provider or pharmacist has a list of the inactive ingredients used to make diltiazem.
Have sick sinus syndrome and do not have a pacemaker.
Have third- or second-degree heart block and do not have a pacemaker.
Are having a heart attack and have fluid in your lungs.
Diltiazem Warnings and Precautions: Summary
There are several situations in which diltiazem should not be taken, along with a number of precautions and warnings people should be aware of with diltiazem. However, it is possible that not all of the warnings or precautions for diltiazem were discussed in this article. Therefore, you should talk with your healthcare provider about the diltiazem warnings or precautions that may apply to you.