Hi we have tried it, and like he said, nausea is the biggest drawback. I found with my woman, if you start it out in VERY small amounts, just 1 injection per day, you can get around that.
But if you just blast her with .5ml (of course it depends how you re-constitute it), then she will want to throw up all night.
I can say when we do it, we plan it out. So say in two weeks you have some crazy vacation or weekend away by yourselves, you start injections now. By the time that weekend rolls around she is practically dripping and will cum if you just play with her nipples, lol.