Snoopy, I take my mag separate from Calcium. I take my mag with lunch and dinner,
and calcium between meals, whenever I remember between lunch and dinner, dinner and bedtime, or even breakfast and lunch. I learned that it was best to keep them separate because we need both but they are antagonists in what they do to our nerves and muscles.
I have to have calcium too, to keep from jerks and spasms, which are more pronounced now....but it I get enough of both, I do not jerk and spasm at night. I also take B1 at night.