What are the best tolerated blood pressure medications without side effects? What about diltia xt (diltiazem)?

All hav side effect. All blood pressure medications have some side effects. Some of the perceived symptoms are drug specifics, while many symptoms are related to blood pressure lowering (ie, dizziness, fatigue). In general, diuretics, ace inhibitors and angiotensin receptor blockers are well tolerated. Common symptoms of diltia xr are constipation; dizziness; facial flushing; headache; lightheadedness; tiredness.