OK, before I 'do' Dawney, just a word about supplements.
It's all quite simple really...we're all individuals. So, take for example 5 people with flu, go to Dr's and he prescribes same anti-biotic for all 5 people. Now, on 2 people they just don't work, they get better all by themselves, 2 people after the initual 48 hours start getting better...maybe due to anti-biotics, 5th person....still poorly...goes back for more.
5 people come to me for a prescription....all 5 will walk away with a different 'prescription' as the underlying cause of getting the flu is addressed. Now some people wont relish the idea of using 'smelly stuff'' so a couple might go to a herbalist...but both of them will be given individual prescriptions, another 2 might go to a homeopath...again 2 different prescriptions. The 5th person might prefer to go to a Kinesiologist (another therapy I practice) because they want something more physical, rather than 'take' something.
So to apply the above to things like Evening Primrose (which has some horrible side effects on some people btw) this is why it works for some and not for others. Also instead of Evening Primrose I tend to recommend Star Flower oil capsules, no known side effects and I've never known enyone to say they didn't get some improvement to a greater or lesser extent. I found takling Don Quai absolutely brilliant too for all types of period problems from headaches to mood swings to irregularity. Again clients have reported improvements to greater or lesser extent.
Hope this helps....Off to 'do' Dawney

Jane