The same thing applies to D as it does calcium; BOTH need magnesium (in high enough doses of a quality form) in order to absorb. If you do a bit a research you’ll also see that there’s decent info on epilepsy being caused by low mag.
I’ve put him on a magnesium-potassium supplement for years. He hasn’t had a seizure in 6 years, and is able to be on the lowest possible dose of seizure med.
I think he should maybe try and come off his meds completely, but he trusts his neuro doc. He’s 24 now and making those calls 🙂
But I agree with you