Five Homeopathic remedies (Natrum muriaticum, Lachesis, Sepia, Nux vomica and Pulsatilla ) will be used, in five different therapy groups. The women will be allocated to the groups according to their matching to the remedy according to Homeopathic principles. In each group the women will either be treated with the appropriate remedy or with a placebo remedy. Women who do not match any of these five groups will be allocated to a sixth group receiving either Folliculinum that is given as general indication for PMS in homeopathy or placebo.