%0 Journal Article %T Increased frequency of angina attacks caused by switching a brand-name vasodilator to a generic vasodilator in patients with vasospastic angina: Two case reports %A Chikage Oshita %A Hiroki Teragawa %A Remi Goto-Semba %A Tomohiro Ueda %A Yuichi Fujii %J Archive of "World Journal of Cardiology". %D 2018 %R 10.4330/wjc.v10.i3.15 %K Vasospastic angina %K Acetylcholine %K Brand-name drugs %K Generic drugs %K Refractory chest pain %U https://www.ncbi.nlm.nih.gov/pmc/articles/PMC5867450/