  Nitroglycerin tablets.   
Nitroglycerin is a powerful explosive that also works to treat chest pain caused by blood vessel constrictions.  There does not appear to be any connection between these two properties of the substance.  
Source: Max Whitby of RGB 
Contributor: Max Whitby of RGB 
Acquired: 28 June, 2009 
Text Updated: 29 June, 2009 
Price: Donated 
Size: 2" 
Purity: <5%
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