I’d suggest stopping the magnesium first to see if that’s sufficient to make things better. You don’t say what kind of calcium you’re taking, but calcium citrate tends to be well tolerated.

Hi Scott! Thanks for your quick reply.  The calcium I am taking is from marine algae (Aquamin). It's a multi-vitamin that I am taking and the magnesium is also from Aquamin.  Aqamin is derived from red-algae.  I think I'll stop taking this particular supplement and give calcium citrate, on it's own, a go.

Thx!

I take Andrew Lessman Vitamin D and the calcium. They are additive free. Can be purchased on amazon and Hsn.
I’ve been taking these for years with no upset

Thanks for the suggestion!

It’s usually best to change one thing at a time, if you can, to best understand what caused the results you see. Nevertheless, plenty of supplements can cause diarrhea, so it might not be just one thing. I’d also suggest you take dietary supplements with food, as that sometimes improves absorption and decreases side effects.

Good advice! Thx, Scott!