---
topic: Vitamin D and K2
tags: [supplements, vitamins, bone-health, cardiovascular, archived]
priority: archived
last_updated: 2026-05-10
confidence: preserved
abstract: >-
  Vitamin D/K2 product details, sufficiency logic, K2 evidence limits, and monitoring rules are now folded into Endocrine / Vitamin Watchlist.
---

# Vitamin D and K2 — archived pointer

This page is preserved as an old anchor. The active guidance has moved to [Endocrine / Vitamin Watchlist](#sec-calcium-PTH).

Original content was archived before consolidation at `archive/endocrine-vitamin-originals-2026-05-10.md`.

Use the canonical owner for current calcium/PTH/D monitoring, vitamin D/K2 interpretation, thyroid trigger rules, and evidence links.