When I hit my Mirena Crash I started taking a chewable multi, since the big pills are hard to digest fully. I am also taking a Vitamin D, Vit C, and the B 100. All these I get a Trader Joe's. I'm also taking the Calcium, Magniseum, Zinc combo pill to help easy muscle tension. It helps a lot with my cramps. I have completed 3 full cycles so far, and I dont get cramps anymore on my period. I used to get cramps so bad that I would take 1,000 mg of painkillers.