Ageless Pet

D-Coding Vitamin D: When to Test, When to Supplement

Gabriella Varcoe DVM, DACVSMR, and Carmine Bausone DVM Season 2 Episode 2

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0:00 | 21:07

Is your patient truly vitamin D sufficient, or just flying under the radar? In this episode, we shine a clinical spotlight on the “sunshine vitamin” and its expanding role in veterinary medicine. From calcium regulation and bone health to immune modulation and chronic disease, vitamin D is far more than a simple nutrient.

We break down when testing is warranted, how to interpret serum 25(OH)D levels, and what the current evidence says about supplementation across species. You’ll also hear practical guidance on dosing strategies, avoiding toxicity, and navigating the fine line between deficiency and excess.

Whether you’re managing growth disorders, chronic enteropathies, renal disease, or simply refining your preventive care protocols, this episode delivers clear, actionable insights to help you make confident decisions about vitamin D in practice.