Most of us have had some struggle to absorb sufficient magnesium so we have studied it a lot. Magnesium is required for so many processes from adrenal support to mitochondrial energy production to vitamin D absorption to … you name it.
The attached fact sheet on magnesium is quite good. It does not mention that Vitamin K is required to absorb magnesium nor does it mention the glycinate form.
That said, take a look and see if there is anything new to you.
The other nutrient pages in this series might be worth a look too.