What is nitroglycerin?

I think every knows nitroglycerine to be a powerful explosive. Clever question designed to challenge our guessing abilities on a substance we all know well. I would have liked a mention that it was better known for its explosive properties and been given more info about that too

nitroglycerin is the explosive used to make dynamite, and in small doses an effective vasodilator

I knew this, as my dad used to take it in the 70's for his heart issues.

Gilligan! You drank the nitroglycerin! I what?

I have learned some things from anatomy and physiology so I know some things about that.

otherwise known as an explosive!

Oriana, it says it’s an explosive at the end of the explanation….

PgB, primary ingredient in dynamite. Nitro G and saw dust.

It can be used also for explosive.