I am no supplement expert, okay, I don't want to in any shape, form or fashion give that impression. I want to emphasize a very real fact, very, very strongly. Gentlemen, PLEASE do not encourage your wives/GF to mess around in this department. A post pregnancy woman's body -- and IN PARTICULAR, her endocrine system/hormone balances -- for up to 12 months after delivery, is NOT and CANNOT be compared to her normal state. You can't even compare what happens from one woman to the next.
The fact is, most women's bodies will permanently change to some degree after they have a baby, and some cannot, EVER, get back to the way they were pre-pregnancy because of those changes.
Estrogenic fat depositions post pregnancy are normal, higher than normal levels of estrogen and prolactin are normal. You can't rush or jumpstart things, you can't force things -- any more than you make a normal, healthy baby be born in less than 9 months. Gentlemen, try to be patient and let nature take it's course, and if it's your ladies who are the ones freaking out, try to get them to take a breath and focus on the big picture. Remind them that it took them 9 months to get that new body, that to expect their bodies to change back in much less than that is unreasonable, they're being too hard on themselves and trying to do too much, too fast.