★★★★★
I find that taking Flax Seed Oil (a few teaspoons a day, spread throughout the course of the day) radically helps the symptoms of my PMS. Also a calcium/magnesium liquid supplementation helps me a lot as well. Oh yes, also exercise! Can't believe I almost forgot about that. If I don't exercise regularly towards the onset of my period, I get foul tempered, especially when I drive.