Yes, I used it for a while. It's natural progesterone isnt' it? To be honest I can't say it helped or it didnt and after the couple of jars I had bought were used up (this was a couple of years ago) and I paid about £17 quid each over the internet after reading John Lee's book and thinking that the 'oestrogen dominance' theory seemed to match my own symptoms best and it was worth a try. I never bought anymore after that though. It didn't have any adverse effects, but I can't say as it made me feel any better that I was aware of? I just felt the same really and £17 quid a pop seemed a lot for something that didn't seem to be making any difference.
I'm still peri-menopausal, still getting (occasionally erratic) periods at 51, and what I've found works best is to just ride with it. For the past 6 years or so, I've had so many of the classic peri symptoms but what I find is they come for a while ... but (and I know this sounds daft) but if you can just put up with it for a few weeks/months, however long it lasts, then the body seems to take care of it, if that makes any sense, and that symptom fades away.
Admittedly, another symptom may emerge, and it's a bit like fire fighting, but I think as modern women we tend to forget that this time in our lives is entirely natural, same as puberty, childbirth and all the other cycles our body goes through. Yes peri can be a weird and uncomfortable time, but we are equipped to deal with it and with that mindset - I've come through it without too much trouble. Worst thing for me is probably the insomnia, but again, I've learned to live with it. Sometimes I just stay up till the early hours, sometimes I'll read or watch a film if I wake up in the night and not even try to sleep. I've also found (incredibly) that the old wives tail of a sweet, milky drink at bedtime really does work. For me it's proved to be the best sleep aid of the lot but that's a different thread entirely.