Depends: If you are prescribed them for angina pectoris (cardiac chest pain) by a doctor who knows your history, and you use them correctly, they are quite safe, although they can cause headache, low blood pressure, fainting and other problems. If you are using it "recreationally," esp for sex, that is a whole other ballgame, and it is NOT safe. Heavy use can result in methemoglobinemia which can be lethal
Answered 9/10/2015
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A doctor has provided 1 answer
A doctor has provided 1 answer
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