empower you would have to go through the american bureaucracy of having prescription paperwork.
you can use mail order India sites, no RX required.
look for pregnyl in the glass ampule, pharma fda approved.
also fertigyn in the glass ampule. not fda pharma, but at least its India pharma (Sun pharma) one of the largest producers in the world.
corion is also said to be good, its in a vial.