you are allergic to any ingredient contained in Generic Viagra Suhagra
you have been advised by your medical doctor to abstain from sexual activity due to existing heart problems
do not consume nitrates in any form (for example isosorbide, nitroglycerin) whether it be in capsule, tablet, patches, ointment, or nitroprusside.
you use any recreational drugs for example; amyl nitrate, butyl nitrate
for best results do not use in conjunction with alcohol or the results of the medication will be reduced.