Sometimes it can help to take calcium and vitamin D which tends to slow smooth muscle contractions. Magnesium has been used as a laxative for a long time, and it can take some experimenting to find the right amount. We buy our calcium and magnesium in powder form so we can adjust the ratio easier.
As I read the article, it dawned on me that while I was pregnant, I was put on Magnesium Sulfate to stop contractions. I specifically remember they said I would become very weak. I didn't. I could finally move!! My symptoms during pregnancy were awful. I wish I had known then to supplement magnesium while I was pregnant.
At least I will know to tell my daughters some day now.