Answer: Nitroglycerin is used because it dilates the vessels and therefore lowers the blood pressure. But most importantly, it dilates the coronary arteries, which causes angina.

Huang, A. J., et al. (2023) Efficacy of Continuous Transdermal Nitroglycerin for Treating Hot Flashes by Inducing Nitrate Cross-tolerance in Perimenopausal and Postmenopausal Women.