Stamina_Rx was pulled off the market by food & Drug Administration on June 20 because it contained tadalafil (Cialis), which is not yet legal in the United States, and will be available with a Doctor's prescription soon. It is similar to Viagra, especially because it is dangerous to mix with other drugs containing nitrites.
If Stamina_RX is re-released into the market, it will not be the same product and it won't have the same effect.

I saw some in 7-11 last week hanging in front of the counter and gave it a try.  It came in a 2 pill packet.  I took one and literally had wood all day.  I've never taken anything like that before and probably won't again since walking around with a stiffy can be a bit uncomfortable.  Even the next day I was still hanging out there more than usual.