Attachment Last Update May 17, 2024 Extension .pdf Print Code QV85-0278 Language English Location QEII Health Sciences Centre Creator Pharmacy Department, QEII Nitroglycerin (nitro) pumpspray (also called nitro spray) is used to treat chest pain or discomfort. This pamphlet explains why you may need this medication, how to take it, side effects, and how to store it.