Vitamin D (D2 and D3 Split)

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What it measures Measures both forms of Vitamin D separately (D2 and D3). D3 is significantly more effective than D2, and many people supplement the wrong form or lack the co-facto rs — Vitamin K2 and Magnesium — needed for proper absorption. Best for Anyone actively supplementing Vitamin D, or those with a borderline total Vitamin D result from their Core Test who want to understand why levels are not improving. If results need attention Your Protocol doctor will advise on the right form, dose, and co-factors for your situation, and help you build a supplementation protocol that actually moves the needle. Show more