Endo Vitd Supplementation Over75

---
name: endo-vitd-supplementation-over75
description: Suggests empiric vitamin D supplementation to lower mortality risk in adults aged 75 years and older. Triggered by clinician questions such as “Should I prescribe vitamin D to this elderly patient?” or “Is vitamin D supplementation indicated for patients over 75?”
---

# Vitamin D supplementation for adults over 75

## STEP 1 — Gather Information
Confirm patient age ≥75 years, absence of established indications for vitamin D treatment or 25(OH)D testing (e.g., no malabsorption, renal osteodystrophy, granulomatous disease, hypercalcemia, or current vitamin D deficiency therapy), and assess current vitamin D supplement use; determine eligibility for empiric supplementation.

## STEP 2 — Rule In / Rule Out
If the patient is ≥75 years and generally healthy without contraindications, proceed; otherwise, do not recommend empiric vitamin D supplementation for mortality prevention and consider alternative indications or testing.

## STEP 3 — Classify or Stratify
Classify preferred dosing regimen: daily lower-dose vitamin D (preferred) versus nondaily higher-dose regimens; choose daily lower-dose vitamin D as the preferred regimen.

## STEP 4 — Decide
Prescribe empiric vitamin D supplementation via daily lower-dose (e.g., 800–1000 IU vitamin D3 per day) and advise against routine 25(OH)D testing.

## Clinical Guardrails / Mimics / Pitfalls
Do not use in patients with conditions that alter vitamin D metabolism (malabsorption, renal failure, granulomatous diseases, hypercalcemia); avoid high bolus dosing; do not rely on 25(OH)D levels to guide dosing; do not extrapolate to those with established indications for vitamin D treatment; supplementation is inexpensive and feasible but should not replace dietary intake when adequate.

## Concrete Clinical Example
A 78‑year‑old woman without malabsorption, renal disease, or hypercalcemia asks whether she should take vitamin D to lower her mortality risk; she is not currently taking a supplement. Recommend initiating daily vitamin D3 800–1000 IU and counsel against routine 25(OH)D testing.

**Source:** Vitamin D for the Prevention of Disease: An Endocrine Society Clinical Practice Guideline, Endocrine Society, 2024, DOI:10.1210/clinem/dgae290