Increased frequency of angina attacks caused by switching a brand-name vasodilator to a generic vasodilator in patients with vasospastic angina:Two case reports
Increased frequency of angina attacks caused by switching a brand-name vasodilator to a generic vasodilator in patients with vasospastic angina:Two case reports作者机构：Department of Education and Training JR Hiroshima Hospital Department of Cardiovascular Medicine JR Hiroshima Hospital
出 版 物：《World Journal of Cardiology》 (世界心脏病学杂志（英文版）（电子版）)
年 卷 期：2018年第10卷第3期
页 面：15-20页
学科分类：10[医学]
主 题：Vasospastic angina Acetylcholine Brandname drugs Generic drugs Refractory chest pain
摘 要：It is well known that calcium channel blockers(CCBs) are the first line of therapy for vasospastic angina(VSA). Here, we report two cases of VSA with an increase in the frequency of angina attacks after switching from a brand-name to a generic CCB. In both cases, angina recurred upon switching from a brand-name CCB to a generic CCB during follow-up. The patients condition improved upon switching back to the original CCB. Both cases involved a high severity of VSA, based on the results of spasm provocation testing. These findings suggest that, in some patients with severe VSA, the frequency of angina attacks increases when switching from a brand-name CCB to a generic CCB. Cardiologists should consider this factor when prescribing drugs for angina.
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