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Dietary Category (Type) The broad type of ingredient: Vitamins, Minerals, Herbs & Botanicals, etc.

Primary Category (Nutrient) The common nutrient name grouping all its chemical variants (e.g., "Magnesium")

Efficacy Tier (Bioavailability) Tier 1: High absorption, body-ready. Tier 2: Moderate absorption. Tier 3: Low absorption, requires conversion.

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Inside: low Vitamins Inside Body Tier 2

Vitamin A is a group of compounds vital for vision, immune function, cell growth, and reproduction. It exists in various...