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Figure 4 Angina attacks (A) and nitroglycerin consumption (B) during monotherapy and combination therapy. Both amlodipine and diltiazem (Adizem XL) reduced angina and nitroglycerin consumption (p < 0.0001). Nitroglycerin consumption was significantly lower in patients receiving amlodipine/atenolol. *p = 0.02.