[Gawku]

From what I've researched on PC, if it's got Progesterone USP in the ingredients, it's the only form that can be absorbed properly. You could use wild yam extract, but the body won't convert it. If you invest in PC, make sure it has a measured pump that gives 20 mg per pump. That's what's naturally secreted daily in Luteal phase in women. So long as you use it properly, and apply it to the right areas (palms, underarms, chest, areas with thin skin) and apply it at the right time in your cycle (never more than 3 weeks in a month, don't apply during your week), you're safe using it. It's what I've been using, with collagen. From what I understand, it progresses swelling during the Luteal phase and balances your hormones when used daily.