I get my progesterone cream from Biovea.com/au I am not sure if it is soy cream. As the other person said, you can get progesterone build up and progesterone dominance. I use it along with pregnenolone, and use a little of each always at the same time, so I am getting a balanced dose. Otherwise I end up teary and lethargic. I wish they sold the under the tongue prog tabs here OTC, but it seems they don't.