Long before starting the SBD I was experience cramping in my calf, only one, during my sleep. So I added potassium to my vitamin, etc, intake and they went away, as if by magic. I have been taking calcium for a long time--I am an "oldie" 61 yrs,
I don't take any prescription drugs but I do take a daily dose of multivitamin, Vitamin E, Potassium, Calcium Citrate, CLA supplement, Vitamin B Complex and Magnesium. I have taken HRT, but after 10 years enough is enough.
Check with your Dr. and see what works.