Drink plenty of fluids and herbal teas

As much as a good diet will help, sometimes you will need to add some supplements and here are the key ones for helping with PMS:
Vitamin E = helps with mood swings and irritability

Magnesium & B6 = VITAL mineral and women are often very deficient in it. It is a calming mineral and has a relaxing effect on the nervous system, reduces headaches and relaxes muscles.

Zinc = Balances sex hormones

Alternative Therapies can also be very helpful:
– Homeopathy
– Acupuncture
– Aromatherapy
– Reflexology 

PMS can be associated with increased Oestrogen, Food Cravings and water retention but by adjusting diet and lifestyle you can treat the underlying issues and not mask the symptoms.