Erase is Androsta-3,5-diene-7,17-dione - "common" name is 3,7-keto DHEA, a metabolite of DHEA.
3,7-keto DHEA is not a steroid or a prohormone, nor is it a drug. It is a natural product, and yes, it is effective - natural products can be extremely effective; not just drugs and hormonals work, you know. Read the product write-up to see why it is so effective:
Erase Information.
Erase is not similar to Androstadienone - just because the nomenclature may seem or sound similar does not mean that the compounds are the same or are in any way related to one another.
~Rosie~