VitaPremium Vitamin D 4,000 IU Gel vs Vitabiotics Ultra Vitamin D Tablets 2000IU, Vitabiotics: Which Should You Buy?

This is a strength decision, not a brand one, and the honest starting point is that <strong>NHS advice is 10 micrograms, which is 400 IU, daily in autumn and winter</strong>. Both of these are well above that. The 4,000 IU capsule is ten times the recommendation and sits exactly at the adult daily upper limit; the 2,000 IU tablet is five times it and leaves room for a multivitamin or a cod liver oil alongside without pushing you over. On the numbers the 4,000 IU has the larger review base by a wide margin, 42,800 against 13,100, and being an oil-filled gel capsule it absorbs less dependently on taking it with food. But bigger isn't better here in the way the packaging implies, and the rule that matters is to add up vitamin D from everything you take. If you've symptoms that could be deficiency, ask your GP for a blood test rather than self-prescribing a high dose.

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