Forgive the capitals.
I have found the sweet spot for magnesium supplementation for constipation and its about 600mg split between 2 doses of 1/4 ts oxide but its also unfortunately causing me muscle cramps and dry eyes to the point I can't wear contact lenses during supplementation.
I have tried many forms of magnesium over the years, and I can tolerate magnesium glycine and intermittent threonate, ie once very 3 days before bed. In either case those doses are small - about 100mg.
Magnesium citrate causes me extreme gastrointestinal pain so don't take that. Magnesium taurate doesn't agree with me either yet I can take taurine in high doses and magnesium independently.
Magnesium oxide is the only one that actually helps with my digestive constipation anyway.
The only problem is when I take the equivalent of 600mg magnesium no matter how spread out I get muscle cramps. I drink 2-3 litres of water a day and eat plenty of veg too.
Can someone help explain this phenomenon?