Safety information:
Viagra
Do NOT use Viagra if:
you are allergic to any ingredient in Viagra you have been advised by your doctor to avoid sexual activity because of heart problemsyou are taking nitrates (eg, isosorbide, nitroglycerin) in any form (eg, tablet, capsule, patch, ointment), or nitroprusside... read more
Cialis
Do NOT use Cialis if:
you are allergic to any ingredient in Cialisyou have severe kidney problems and will be taking Cialis dailyyou have severe liver problems or certain hereditary degenerative eye problems (eg, retinitis pigmentosa)... read more
Levitra
Do NOT use Levitra if:
you are allergic to any ingredient in Levitrayou have been advised by your doctor to avoid sexual activity because of heart problemsyou have certain heart problems (eg, severe heart failure, angina), low or high blood pressure, severe liver problems or severe kidney problems that require dialysis... read more