@heavyphil
The full set of related supplements is vitamin D, K2, and Mg (magnesium).
Was that maybe your third supplement?
If not, try adding an Mg supplement - or have a few almonds every day as a good source of magnesium.

The "normal" range of 20 or so turns out to be minimal, not optimal, it means you don't suffer from rickets but your immune system is much happier if the range is 50 or higher.

Conventional medicine pays FAR too little attention to nutrition, it looks for horrible deficiency with symptoms like rickets but it has no conception of "optimal". You know why? Because the range of "medicine" was standardized in 1910 by the Flexner report to eliminate fraud and snake oil, and in 1910 we had not yet even conceptualized the term "vitamin", there were no vitamins! And nobody has updated the scope in 116 years!?!?!?!?!