[TibetanPrincess]

Abi,
I don't know, I am just telling you what I had used past and now.

I had very bad excruciating pms cramps that woke me up during the night and started screaming... like someone put their hands in my body and started twisting or pulling, cutting part of my body organ out, just to tell you how bad that was. Then 11 years ago, I came across some post so I bought one single brand that I no longer found it online anymore. It was a lot more granier than the Source Naturals PC that is way too smooth.

This is the part I said to myself in my next life, I don't want to be a woman anymore

All of these went away when I had that ovarian cyst removed.
-V

Yeoow! So sorry to hear about that!

About the PC... Again more oddness. I felt that the Swanson's PC was grainier than the Source Naturals, and DIDN'T feel like it was nearly as effective NOR absorbed half so well.

I wonder if maybe there was some other ingredient hidden in the other PC other than progesterone which was giving the "extra" benefit for easing those nasty cramps. Perhaps it's main carrier was that wood-derived solvent whose name fails me atm? It's known to be a very powerful local anti-swelling agent. Again, the exact terminology escapes me atm... it's getting late and my mind is starting to say screw you stop thinking time naow.

And arguably it's NOT being used could be considered a much greater health benefit than it being used... Too much of that stuff's known to be harmful after a while.

wood sourced? some type of cellulose most likely. I like to stay away from supps with added things like this. It messes up the absorption in my opinion.