![](http://www.alamy.com/thumbs/6/B2DB8BC9-7CD2-4B8A-B46D-6994C3DED93B/M8P3HD.jpg)
Glyceryl trinitrate belongs to a group of medication called nitrates. Nitrates work by relaxing and widening the blood vessels that increase the blood
Size: 3153px × 4729px
Location: Salisbury, Wiltshire, UK
Photo credit: © pcpexclusive / Alamy / Afripics
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