Excerpt from today’s incoming junk email
“Goodbye VIAGRA, Hello STAMINA RX”
What is Stamina RX? And is it really better than Viagra?
Googled to find out something and hit on this warning:

FDA has determined that the products actually contain the prescription-strength drug ingredient, tadalafil. Tadalafil is the active ingredient in Cialis, an Eli Lilly product approved in Europe to treat male erectile dysfunction. An interaction between certain prescription drugs containing nitrates (such as nitroglycerin) and tadalafil may cause a drastic lowering of blood pressure. There is real danger that this product may be taken by patients taking nitrates since erectile dysfunction is often a common problem in people with diabetes, hypertension (high blood pressure), hyperlipidemia (high cholesterol), ischemic heart disease and in people who smoke.

Literally not for the faint of heart.
No, I am not actually looking for an alternative of Viagra. Never. Never.