Natural health: Period pain and taking flower essences

One of the most effective natural remedies to relieve pain and cramping associated with menstruation is evening primrose oil (EPO), says Megan Sheppard.

Q. My friend finds that taking aspirin during her periods really helps with the pains and cramping. Is this because it thins the blood?

I was also wondering if white willow bark would help as a natural aspirin alternative.